Scientists are concerned about a decrease in global biodiversity due to extinctions of organisms now and in the future. Scientists know about a mass extinction that wiped out the dinosaurs in a very short time. Describe a possible cause of this mass extinction and two consequences that may give scientists cause for alarm about the possibility of future mass extinctions.

Answers

Answer 1

Answer:

Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.

Explanation:


Related Questions

Which statement best describes the breakdown of food in the digestive system?

Carbohydrate digestion starts in the stomach and protein digestion starts in the stomach.
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.
Carbohydrate digestion starts in the esophagus and protein digestion starts in the small intestine.
Carbohydrate digestion starts in the small intestine and protein digestion starts in the esophagus.

Answers

Answer:

Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach

Explanation:

Salivary amylase is an enzyme found in the mouth it breaks down starch (a carbohydrate) into maltose. protease is the enzyme that breaks down proteins and its found in the stomach .

Answer:

Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach

Explanation:

Chemotherapy is associated with

germicides
ant infectives
antibiotics
all of the above

Answers

Answer:

B) anti-infectives

Explanation:

I just finished this lesson.

In the past, Native American Indians buried dead fish along with corn seeds. This technique was used because the decomposing dead fish would:

Answers

Answer:

Give nutrients for the corn seed to grow

Explanation:

The native Americans were using fish as fertilizers. Since fish fertilizer enhances soil quality, it also enhances soil productivity by supplying the essential nutrients for crop growth Fish fertilizers have blister nitrogen as well as the essential nutrients phosphorus as well as potassium. 

This technique became popular when Native Americans taught the colonists such techniques of surviving in wilderness.

Name two pond populations that could not survive in a forest ecosystem

Answers

Answer:

Name two pond populations that could not survive in a forest ecosystem,  monkeys, ants, and birds.

Explanation:

A team of students from UGA are completing a field study to determine the impact the American alligator has on ecosystems in places such as the Okefenokee Swamp in South Georgia over a 3-month period. In one area, they have removed the alligators and in another area they have left the alligators. What is the hypothesis the students are testing?
A.
If the American alligator is a keystone species, then the ecosystem with alligators absent will be healthier and contain greater biodiversity.

B.
If the American alligator is a keystone species, then the ecosystem with alligators present will be healthier and contain greater biodiversity.

C.
If the American alligator is a tertiary consumer, then the ecosystem with alligators present will contain fewer primary producers.

D.
If the American alligator is a tertiary consumer, then the ecosystem with alligators absent will contain more primary producers.

Answers

Answer:

B

Explanation:

100% B

If the American alligator is a keystone species, then the ecosystem with alligators present will be healthier and contain greater biodiversity.

The diversity of living organisms on Earth, including plants, animals, microbes, and fungi, is referred to as biodiversity.

The Earth's biodiversity is so diverse that many species are still undiscovered, but because of human actions, many species are facing extinction, endangering the Earth's amazing biodiversity.

The vast variety of life on Earth is referred to as biodiversity. It can be applied more precisely to all the species found in a certain area or environment. Every living creature, including plants, microorganisms, animals, and people, is referred to as biodiversity.

To learn more about Biodiversity, refer to the link:

https://brainly.com/question/23101752

#SPJ2

Which of the following is the most likely effect of flooding on an ecosystem?

Answers

Answer:

A

Explanation:

Since the water occupies a bigger space the organisms that reproduce in freshwater have a bigger area to reproduce.

Which is not a way to test water quality?
a. Humidity
b. pH
c. Chlorine
d. Dissolved oxygen

Answers

I don’t knowwwwwwwwwwwwwww

If you were about to go up in space, what types of things would you like to discover there, rather than rocks , I will give you if you answer this not only 10 but 30 points, Arigato!

Answers

Answer:

planets, stars(you can't reach them but you can see them), clouds, black holes, one of the biggest stars(bigger than the sun and hot so go too close ),  Nebula, Himiko Cloud etc.

Explanation:

it honestly depends on how far you are

This is a what
A human b alien C mammal D all the above.

Answers

Answer:

A) he is a human okkkkkkkkkk

Answer:

well when looking closer at the picture you see diffrent things and humans are mammals so im going to go with d all of the above

Explanation:

Help please I'll give brainlist :) just the first part

Answers

Answer:

least specific- Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species - most specific

Explanation:

Dear King Phillip Came Over For Good Soup

Which type of tree ends up dominating many landscapes over time because they will slowly make it harder for other types of trees to grow?

Question 5 options:

Shrubs


Conifer


Deciduous


Grasses

Answers

Answer: conifer

Explanation: I took a test with the same question and I got it right but other than that I have no explanation

Answer: conifer

Explanation: i took the quiz and got it right

hope it helps:)

Animal body systems often coordinate their actions to carry out specific functions for the whole animal. Which of these correctly describes the interaction of two biological systems for a specific purpose in the human body?

Answers

Answer: I believe c is what you're looking for, D is also a viable option, but C is more likely.

Explanation:

The integumentary and immune system correctly describes the interaction

of two biological systems for a specific purpose in the human body.

The integumentary system which comprises of the skin, hair and nails help in

the protection and prevention of foreign substances from entering into the

body.

In situations where there is a cut or pathogenic microorganisms being

present in the body then the immune system acts by production of

antibodies which fight them.

The two systems work hand in hand to protect the body from foreign

compounds or organisms which may cause illness and death.

Read more on https://brainly.com/question/23273803

Helppppppppppppppppppp! ILL GIVE BRAINLIEST!!!!!

The graph below shows four different traits and the extent to which each trait is shared among different types of siblings raised in the same environment. In the graph, identical twins are siblings who share the same mother and father and are genetically identical, biological siblings are siblings who share the same mother and father but are genetically unique, and adoptive siblings are siblings who do not share the same mother and father.


Based on the information in the graph, which trait has the strongest genetic component?


A. Trait 1

B. Trait 2

C. Trait 3

D. Trait 4

Answers

Answer:

trait 1

Explanthis was counfusing so i might get this rong

Answer:

We will need more info please!

Explanation:

I will help you but ill need the graph!

Which of the following best describes the Earth's atmosphere? *

An empty space
A big blanket absorbing the Sun's heat
A thin towel that does very little to protect the Earth
A large cloud that generates the Earth's electromagnetic field

Answers

Answer:

the 4rth one

Explanation:

what happened when you simulated wave movements in your oil spill model. what affect would this have on resource availability for organisms that live near or around the shore

Answers

Answer:

Wave movement started to move the oil around in the water mixing it a little bit, but not very much. Wave movement also brought the oil near the shorelines. This could affect organisms that live around the shoreline because many organisms will catch hypothermia and most likely die if not treated.

Explanation:

How is the carbon cycle an example of the Law of Conservation of Energy?

Answers

Answer:

The Law of Conservation of Matter states that matter cannot be created or destroyed.

The carbon cycle is an example of the Law because the same carbon atoms are being recycled through the carbon cycle.

Climbing plants use other plants or rocks or man-made structures for support. Which of these is a climber? Why? a. Banana plant b. Sugarcane plant c. Grape plant d. Rice plant

Answers

Answer:

C.grape

Explanation:

The one that is a climbing plant is grapes. The correct option is C.

What is a climbing plant?

A vine is any plant with trailing or scandent stems, lianas, or runners. When used in wicker work, the term vine can also refer to the stems or runners themselves.

Creepers and climbers have thin, slender stems and cannot stand upright on their own.

Climbers, such as jasmine, grapevine, and money plant, require external support to grow vertically. Creepers, such as watermelon and pumpkin, grow horizontally on the ground.

A grapevine, also known as a grape, is a stem-tendril climber plant with cascading growth that grows in an upward direction.

Every year, new shoots emerge from this plant. It is grown to a height of 19 meters or more, depending on the pruning technique used.

Thus, the correct option is C.

For more details regarding climbing plants, visit:

https://brainly.com/question/28838406

#SPJ2

(Heredity)Discussion Topic
In some cases, people who test positive for genetic testing can receive
preventive treatments. For example, people who test positive for the breast
cancer genes BRCA1 and BRCA2 can have a preventive mastectomy (breast
removal surgery) before they develop the disease. In other cases, no preventive
treatments are available, but frequent monitoring can help detect a disease
earlier, when it's more easily treated.
What ethical or professional concerns does a health-care professional need to
address when he or she has a patient who wants to prematurely treat a genetic
disease? Do you think genetic testing should be part of normal preventive
healthcare? Why or why not?

Answers

Answer:

Discrimination occurs due to presence of "inferior" genes

Explanation:

Discrimination occurs due to presence of "inferior" genes is the ethical or professional concerns that the health-care professional need to  address when he or she has a patient who wants to prematurely treat a genetic  disease. Yes, I think that genetic testing should be a part of normal preventive healthcare because this genetic testing provides information about inheritable diseases. This testing can avoid future diseases by treating it before it causes severe damage to the body.

Answer:
this is an alternate answer that is simply paraphrased from the first answer (to prevent suspicion of cheating)
Explanation:

Discrimination arises owing to the presence of "inferior" genes, which is the ethical or professional dilemma that a health-care provider must face when he or she has a patient who wishes to treat a hereditary condition early. Yes, I agree that genetic testing ought to be a standard component of preventive healthcare because it informs us about inheritable disorders. By treating diseases before they seriously harm the body, this testing can prevent them in the future.

 What can you do to verify its purity? 

Answers

Answer:

To verify you have a pure sample use the sterile needle to isolate and grow on a new streak plate to make sure you see only one culture.

Explanation:

Muscle cells combine to form __________.
A. muscle tissue

B. brain tissue

C. bone tissue

Answers

Answer:

the answer is A........

Answer:

A. Muscle Tissue

Explanation:

Cells are the basis in creating tissues, which are the basis in creating organs, which are the basis in making the organ system.

In this case, the cells given to you are muscle cells. Using the description above, the next logical "upgrade" would be a muscle tissue, followed by a muscle, and then the muscular system.

what is one way in which energy differs form nutrients?
A. producers do not need energy
b. energy is never recycled
c. nutrients are never recycled

Answers

Answer:

B. Energy is never recycled.

Explanation:

Chemical nutrients and energy tend to flow in the same direction for most of an ecosystem. The big difference is that the chemical nutrients are recycled in the ecosystem while the energy is lost from the ecosystem to the universe at large. Energy in any ecosystem comes from the Sun.

How did the research of Miller and Urey contribute to the hypotheses about the origins of life on Earth?

Answers

Answer:

Miller and Urey's research showed that it was possible for organic molecules to be developed from inorganic molecules, which contributed to the hypotheses about the origin of the earth.

Explanation:

Stanley L. Miller and Harold C. Urey developed a series of research and experiments that showed that the planet earth, even in its primitive state, promoted a series of chemical reactions that used inorganic substances as a reagent, to create organic substances as a product and these organic compounds were the precursors of life on earth.

To reach this conclusion, they used a closed system, without the presence of oxygen, but with the presence of hydrogen, ammonia, methane and water vapor. They subjected this system to various cycles of electrical discharges, heating and condensation of the page, to create environments in which chemical reactions could happen. After some time, it was possible to observe the presence of organic molecules.

where is 70s type of ribosomes found in eukaryotic cells?​

Answers

Answer:

All prokaryotes have 70S (where S=Svedberg units) ribosomes while eukaryotes contain larger 80S ribosomes in their cytosol. The 70S ribosome is made up of a 50S and 30S subunits. Ribosomes play a key role in the catalysis of two important and crucial biological processes.

All living things are made up of building blocks known as ______.
A. organs

B. bricks

C. cells

Answers

Answer:

cells.

Explanation

CellsStay Blessed!!!!

Do ecosystems always stay the same? Explain

Answers

No ecosystems do not stay the same because an ecosystem consists of plants groups of animals and land formations it’s always changing animals get their source of energy and protein by devouring other animals and the land is alway reshaping itself and rocks wither away grass grows

How is antibiotic resistance related to Natural selection?

Answers

Answer:

Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.

Explanation:

the maria have few craters compared to the surrounding areas because ______​

Answers

Answer:

Due to absence of erosive agents.

Explanation:

The Maria have few craters compared to the surrounding areas because of no erosive agents such as winds and rain. The erosive agents only formed when there is atmosphere in the region. The atmosphere is responsible for the presence of winds and rainfall. If these erosive agents are present, there will be more craters as compared to the region where no erosive agents are present so that's why Maria have few craters in the region. as compared to the surrounding region.

Nematodes are a model organism for many eukaryotic processes. These worms are often used in laboratory investigations regarding
animal reproduction. One variety of mutant nematode cannot lay eggs in order to reproduce. However, the addition of the
neurotransmitter serotonin provides a mechanism that allows the mutant worm to lay eggs. The results of this study indicate that
multiple organ systems are involved in egg laying. Which statement best describes the interaction between organ systems in this
scenario?
es -))
A)
B)
The respiratory and the reproductive systems interact to produce eggs in
the nematode.
The respiratory and the circulatory systems interact to produce eggs in the
nematode.
The nervous and the circulatory systems interact to produce eggs in the
nematode.
The nervous and reproductive systems interact to produce eggs in the
nematode.
D)

Answers

Answer:

D. Explanation:

The nervous and reproductive systems interact to produce eggs in the

nematode.

Option D

The statement above best describes the interaction between organ systems in the given scenario

What is the nervous system in nematodes?

The nervous system of nematodes consists of a simple ring of nervous tissue around the pharynx. This gives rise to dorsal and ventral nerve cords running the length of the body.

What are nematodes?

The nematodes are round worms known scientifically as Ascaris lumbricoides

They are eukayotesThey have simple nervous an reproductive system

Learn more about eukaryotes:

https://brainly.com/question/19661895

Color, Shape Texture, and Buoyancy are all?

Answers

Answer:

they're all properties of matter

Answer:

Art?‍♂️

Explanation:

Which of the following can NOT be cloned?
a. A dog
b. A rock
c. A bacterium
d. DNA

Answers

it’s either dog cause dna could be cloned
Other Questions
There are many different ways interviews can be conducted, including face-to-face, distance, group, and performance . Which style would you prefer the most? Why? Which style would you prefer the least? Why? True or false East Asia has an abundance of infertile,dry land John was visiting four cities that form a rectangle on a coordinate grid at A(0, 4), B(4, 2), C(1, -4) and D(-3, -2). What is the area of the space that cities enclose? Round your answer to the nearest whole number. Do not include units in your answer. Assume that Jordan Enterprises's radio broadcast license is renewable at the end of each 10-year term and management has provided evidence that approval of the renewal is highly probable. In this case, the broadcast license qualifies as anindefinite-life intangible asset and is not subject to amortization. Therefore, the firm carries the broadcast license at its original cost of $786,000.On December 31, 2015 the company noted substantial declines in radio advertising revenues over the past year due to expanded satellite radiosubscriptions, Internet broadcasts, and the use of iPod players. Based on the required annual review and consideration of the available impairment indicators, management believes that it is more likely than not that the broadcast license may be impaired. Therefore, the company must test the broadcast license for impairment. Similar broadcast licenses have been sold in auctions for $676,000.Assuming that renewal of the broadcast license is probable for this indefinite-life intangible asset, analyze the accounting for impairment and prepare the journal entries.1.) Conduct the impairment test indicated forindefinite-life intangible asset at the end of the year and determine the impairment loss, if any. (If you selected "No" that an impairment loss is not indicated, then leave the impairment loss input cell blank. Show a loss with a parentheses or minus sign.)2.) Next, prepare the journal entry required to record any impairment loss. (Record debits first, then credits. Exclude explanations from any journal entries. If no entry is required select "No Entry Required" on the first line of the journal entry table and leave all remaining cells in the tableblank.) Given that x = 7.4 m and 0 = 26, work out AB rounded to 3 SF.BoAx The diagram is not drawn accurately.AB =m Which statements about the geocentric model are false? Select the two correct answers.A. It explains why Mars appears to move backward for a few months approximately every two years.B. It shows the Sun at the center of the solar system.C. It shows Earth at the center of the solar system.D. It shows the orbits of the planets as circular. A___is asmall, rocky objectthat orbits the sunand has brokenoff from a cometor asteroid. (Fill in the blank) Naomi is going to drive from her house to City A without stopping. Let Drepresent Naomi's distance from City A t hours after leaving her house. Agraph of D is shown below. Write an equation for D then state the slope ofthe graph and determine its interpretation in the context of the problem. Anthony wants to find the value of k for which given points W(0,-2), I(2,0) and L(5,k) are collinearA. K=-3B. K=1/3C. K=1/2D. K=2E. K=3F. K=-1/3 which is a graph of the equation y = 2x - 4 The Good Roads and Highway 66 organizations were formed to ____________.a.promote tourism along the Route 66 highwayb.provide jobs for road construction workersc.create a monopoly on car productiond.construct a network of interconnected highways Connect why is the story of the Triangle Fire Still being told?On number 5 pls Explain the importance of putting your data set in order from least to greatest. 50. Find the length b of the unknown side in this triangle. These are expressions that have non-literal meaning Refer to the article "Opinion: Bicultural Identity Is Something to Be Embraced."Read the claim and the reason.Claim: Young people may be more capable of embracing their bicultural identity and sharing it with the dominant culture.Reason: Her daughter openly talks to her friends about Indian culture, sharing information about Indian dance and music.How does this reason logically support the author's claim?A: It shows how much sharing one's culture breaks down barriers to acceptance.B: It shows how much work the author has done to teach her daughter to be proud of her heritage.C: It shows that her daughter is confident in herself and comfortable with her Indian and American identities.D: It describes how it can be challenging to fit into a dominant culture. If a company would need to increase net working capital to start a potential new project how should it be treated in the project's cash flow analysis? a. The increase in net working capital should be an inflow as part of the project's initial cash flow. b. The increase in net working capital should be an outflow as part of the project's initial cash flow c. The increase in net working capital times (one minus the company's tax rate) should be an outflow as part of the project's initial cash flow. d. The increase in net working capital times (one minus the company's tax rate) should be an inflow as part of the project's initial cash flow. unknown substance's mass: 75.0g, unknown substances molar mass = 150.0 g/mol, Hfus = 5.0x10^3 J/mol, Hvap = 1.00 x 10^4 J/mol, unknown substance's specific heat (liquid) = 2.2 J/g, unknown substance's specific heat (gas) = 4.8 J/g, unknown substances's specific heat (solid) = 5.0 J/g; Calculate the amount of heat (in J) for the unkown sample as it is heated at a constant rate from 10.0c to 25.0c as it passes through each of the following regions: region uv The text below is from the charter of the United Nations:WE THE PEOPLES OF THE UNITED NATIONS DETERMINEDto save succeeding generations from the [destruction] of war, which twice in our lifetime has brought untold sorrow to mankind, andto reaffirm faith in fundamental human rights, in the dignity and worth of the human person, in the equal rights of men and women and of nations large and small, andto establish conditions under which justice and respect for the obligations arising from treaties and other sources of international law can be maintained, andto promote social progress and better standards of life in larger freedom,AND FOR THESE ENDSto practice tolerance and live together in peace with one another as good neighbours, andto unite our strength to maintain international peace and security, andto ensure, by the acceptance of principles and the institution of methods, that armed force shall not be used, save in the common interest, andto employ international machinery for the promotion of the economic and social advancement of all peoples.Source: http://www.un.org/en/documents/charter/preamble.shtmlWhat was the primary reason for the writing of this document? to create an international organization based on collective security to enforce the protection of human rights by member nations to nullify previous international treaties and security agreements to establish an international economic fund to support war refugees 13 POINTS 13 POINTS Imagine watching a movie in which a ferocious lion charges toward you and lunges out of the screen in your direction. This effect can only happen when you are watching a 3-D movie wearing special 3-D glasses. Three-D stands for three-dimensional. When something is two-dimensional, it is flat like a picture. When it is three-dimensional, it is lifelike. It can be viewed from a number of angles. In a 3-D movie, things also appear to pop out of the screen.Which of the following is an example of something that is two-dimensional?a.a table in the middle of a roomb.a room with a photograph on a tablec.a photograph of a table in a roomd.none of the above