species change over time through a?

Answers

Answer 1

Answer:

Evolution

Explanation:

The concept of growth and development and changes , or the hypothesis that species have evolved and formed from previous species, is referred to as evolution. Biological evolution of an organism' features changing over many generations by natural selection. Genetic diversity is needed for evolution to occur.


Related Questions

If glycerol is the same in all lipids why is corn oil different from coconut oil?​

Answers

Answer:

Corn is made up of starch sodium and other chemicals wher as coconut is made from calcium and other materials too

Explanation:

NEED HELPPPPPPPPPPPPP

Answers

Answer:

thymine

Explanation:

Chargaff's rules state that DNA from any species of any organism should have a 1:1 protein stoichiometry ratio (base pair rule) of purine and pyrimidine bases (i.e., A+G=T+C) and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine.

How does biological fitness relate to an organism's ability to survive and
reproduce? *

Answers

Answer:

The biological fitness of an organism is dependent on its ability to survive and reproduce in a given environment. If different traits or alleles increase the fitness of an organism, those alleles will consequently increase in the gene pool, and that trait will increase in the population.

Explanation:

What type of chemical bond exists between two water molecules

Answers

Answer: Hydrogen bonds

Hydrogen bonds, type of chemical bond exists between two water molecules.

What is a chemical bond?

A chemical bond is what binds atoms in molecules together. Electrical forces between positive charge atomic nuclei and negative-charged electrons form bonds. A chemical bond is a long-lasting attraction between ions or atoms that allows molecules and crystals to form.

Hydrogen bonds arise between neighboring water molecules' hydrogen and oxygen atoms. A hydrogen bond is formed by the attraction of individual water molecules. A water molecule is made up of two hydrogen and oxygen atoms atom, with one partly positive hydrogen atom connected to a more highly electronegative atom.

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Your question is incomplete, but most probably the full question was.

A) ionic bondsB) hydrogen bondsC) covalent bondsD) valence bonds

What is the main challenge astronomers face when trying to directly detect black holes? (1 point)
Black holes are too black
Black holes are empty.
Black holes trap all light.
Black holes are too small.

Answers

Answer:

Black holes trap all light.

Explanation:

This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe directly. Objects whose gravitational fields are too strong for light to escape were first considered in the 18th century by John Michell and Pierre-Simon Laplace.

Answer:

1. How do emission and reflection nebulae differ?

                        interactions with light

2. Where could scientists look to observe a black hole?

                              the center of the Milky Way

3. Which description best summarizes the steps that take place during black hole formation, in the correct order?

                         A massive star depletes its nuclear fuel; gravity overpowers               the star; supernova occurs; core of star collapses.

4. Select the correct answer from the list.

   To form a nebula, gravity pulls matter together or causes an explosion.

5. Which of these characteristics of a star make it most likely to become a black hole? Select the two correct answers

                                    It is dying.

      Its mass is greater than 20 times the mass of the sun.

6. Which statement best describes the galaxies closest to the Milky Way?

           These galaxies include irregular, spiral, and elliptical types.

7. Select the correct answer from the list.

Astronomers think that most galaxies are centered by a black hole  which exerts gravitational pull that binds the galaxy together.

8. What is the main challenge astronomers face when trying to directly detect black holes?

                                 Black holes trap all light.

Explanation: I got 100%

                           

Help please at least two sentences

Answers

The carbon circulates through the air. And then goes into the animal. Hope this helps!

free interesting facts about Jordan creek springfield missouri

no links please​

Answers

Springfield's nickname is "Queen City of the Ozarks" as well as "The 417" after the area code for the city. It is also known as the "Birthplace of Route 66". It is home to three universities, Missouri State University, Drury University, and Evangel University.

Explanation:

Here it is.Mark me as brainliest please if u are satisfied with this.

A geothermal power plant is like a regular power plant except that no fuel

is burned to heat 3. _____________ into 4.______________. The steam in a geothermal

power plant is heated by the Earth. Like other power plants, they use many of the same

components including 5. ____________________, 6. ____________________ and other

standard power operating equipment.​

Answers

Answer: 3. Water 4 steam. 5. Turbine 6. Generator

Explanation:

What do these gases form in the atmosphere that is detrimental? How does this then negatively affect plants, animals and the environment?

referring to: Sulfuric acid and Sulfur trioxide.

Answers

Answer:

They form from burning fossils fuels like coal and oil that put more carbon dioxide in the atmosphere. An example of its negativity affect is the melting ice caps it adds more heat which speeds up the melting process (duh) this is the change in animals and the environment and for and for plants it can cause a negative impact on growth.

Explanation:

25 POINTSSS AND BRAINLY THE SELECTED ANSWER IS WRONG BTW

Answers

Answer:

The second option

Explanation:

The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. That is why cells are so small.

Hope i helped! xoxo

How do shifting seasons occur?

Answers

Answer:

  The Earth's tilted axis causes seasons. During different parts of the year, the Earth recieves the sun's rays directly. It's summer in the Northern Hemisphere.  When the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.

Explanation:


please help i’ll give brainliest

Answers

Answer:

the largest amount of organisms are the producers, so yeah choose producers


1. What helped Philip Gingerich decide what kind of fossil he found?

Answers

Answer:

many colleagues

Explanation:

I need help ...please seriously

Answers

Answer:

I think the answer is B

Explanation:

DYNAMITE: C7H5(NO2)3

How many total atoms are there in one molecule of dynamite?

a
19
b
18
c
17
d
21

Answers

Answer:

D it has 21 atoms 7 carbon 6 oxygen 5 hydrogen 3 nitrogen

PLEASEEE HELP ASAP! BRAINLIST GETS 80 POINTS!!!!!!!!!!

04.02 Environmental Resources Lab Report

Instructions: For this lab, use the lab report to record your information. You will submit your completed lab report.

Note: If you cannot complete this lab as directed, please contact your instructor for assistance.

Name and Title:
Include your name, instructor's name, and date.

Introduction
To improve your soil, you should first know what you’re starting with. In this lab, you will sample local soil to determine its composition and pH range.

Materials
• Distilled water
• Metric ruler
• Small zipper storage bag
• Soil from the yard, garden, or other local source
• Jar with tightly fitting lid (tall and skinny would be best)
• Small digging tool
• pH strips (available at hardware and pool supply stores) or vinegar and baking soda

Pre-lab Questions
1. Describe soil particles (sand, silt, and clay) in term of size and texture.
2. If soil is too acidic, what substance is usually added? If soil is too alkaline, what substance is usually added?
3. Why are soil composition and pH important to know?

Hypothesis
Predict what type of soil you think is in your local area (mostly sand, silt, clay, or mixed) and if it more acidic, more alkaline, or neutral.

Procedure

Obtaining soil samples for your jar and resealable bag
1. Take your jar, resealable bag, and digging tool into your garden or yard. Use the digging tool to dig a hole 3–6 inches deep. Take your soil sample from the soil at this depth.
2. Place approximately one cup of soil into the resealable bag, squeeze the air out of the bag, and zip it shut (you will use this soil later in the lab).
3. Dig up additional soil and fill the jar to approximately 1/4 full of soil. Take everything back inside to your work area.
Note: To avoid making a mess, it is best to work on a covered surface (for example, a kitchen counter covered with old newspaper or plastic wrap).
4. Fill the remaining space in the jar with water, and screw the cap on tightly (see Figure 1, below).
5. Shake the jar so that the dirt is totally dispersed through the water (see Figure 2, below). Set down the jar and allow the shaken contents to settle completely (see Figure 3, below). Leave it undisturbed overnight while you test the texture and pH of the soil in your resealable bag.

Note: Do not pick up the jar. Doing so will begin to mix the contents again.

Figure 1 Figure 2 Figure 3

Fill jar 3/4 full of water and 1/4 full of soil. With the lid on tightly, shake the jar well until the soil and water have mixed thoroughly. Let the jar sit. Materials will begin to settle out and form layers.



Testing texture and pH of the soil in your resealable bag
1. While you wait for the soil and water sample to settle in the jar, you can test the texture of the sample in the resealable bag. First, remove a small amount and moisten it slightly to test the texture. Record your observations in the Data and Observations section.
a. Rough and gritty soil that barely sticks together is sand.
b. Loams (mixtures of clay, silt, and sand) feel medium-textured.
c. Smooth and sticky fine textures indicate clay.
2. Next, test the pH using one of the following methods:
a. If you have pH strips: To test with pH strips, place the soil sample in a small bowl or container and add a small amount of distilled water. Add just enough water to make the soil slightly liquid, like a milkshake consistency. Dip the pH strip in and compare it to the color identification provided with the test strips. Record your data in the Data and Observations section.
b. If you do not have pH strips: Use vinegar and baking soda instead. To do this, split the sample into two containers. Add a half cup of vinegar to the first sample of soil, mix gently, and watch to see if it bubbles or fizzes. If it does, it is alkaline. In the second container, add a half cup of distilled water to the soil and mix gently. Then add a half cup of baking soda. If there is a reaction of bubbles or fizzing, the soil is acidic. If neither sample has a reaction, the soil is neutral. Record your data in the Data and Observations section.

Testing soil sample in your jar
1. For the sample in the jar, wait until after the contents have settled and you can see several different-colored layers. In addition, you may see some material floating at the top of the water. You may also see that the water is still clouded with some particles.
2. Measure the total thickness of the soil in the jar after it settles. Record this measurement (in centimeters) in the data table.
3. Observe the settled dirt carefully. There should be distinct layers of soil. The bottom will be your sand layer (largest particles fall out first), then clay or silt, depending on the kind of soil you have. Carefully measure the thickness of any layers of soil seen in your jar. Record your measurements in centimeters (cm) in the data table. Also record the color of each layer.

Answers

69 divided by 1/4 as a fraction

What is the role of the nervous system in the body?
A.To protect other organs and tissues
B.To send messages using blood cells
C.To gather and respond to information
D. To transport oxygen and carbon dioxide

Answers

C. To gather and respond to information

The nervous system supplies information to the brain about its surrounding through sensory organs (via nerves), which then send the information to the brain via the spinal cord.


Which is the meaning of the Latin root "terra"?
1.time
2. earth
3. end
4.sea

Answers

Answer:

it means earth

Explanation:

How are flowering plants and conifers alike? A.They both have incomplete flowers. bThey both make fruits. cThey both reproduce by means of seeds. dThey both have leaves that look like thin needles

Answers

Answer:

cThey both reproduce by means of seeds.

Explanation:

This is because both flowering plants and conifers reproduce by seeds. Although Conifers are gymnosperms, and angiosperms are flowering plants but conifers grow their seeds naked, it often appear on the scales of a cone, instead of encased in fruit. The flowering plants seeds are encased in fruits. Both conifers and flowering plants are vascular plants that is they have vascular tissues which help them conduct water and nutrients

Una persona sana necesita 1500 cal diarias para mantener su peso y su actividad rítmica normal ¿Cuántos J se obtendrá en 18,5 horas?

Answers

Answer:

4838J se requieren en 18.5 horas

Explanation:

Para resolver esta pregunta debemos, primero, hallar la cantidad de calorías necesarias para 18.5h (Ya sabemos que para 24 horas se necesitan 1500 calorías). Después, este resultado debemos convertirlo a Joules (1cal = 4.184J):

Calorías en 18.5h

18.5h * (1500cal / 24h) = 1156.25cal son requeridas en 18.5 horas

Joules requeridos:

1156.25cal * (4.184J / 1cal) =

4838J se requieren en 18.5 horas

Ryder needs to determine the missing term in this set: sperm, egg, zygote, ________ Which term best completes the set?

Answers

Answer: fertilization

Explanation:

Answer:

Answer is D. Fertilization

Fertilization happens when a sperm cell successfully meets an egg cell in the fallopian tube. Once fertilization takes place, this newly fertilized cell is called a zygote. From here, the zygote will move down the fallopian tube and into the uterus. The zygote then burrows into the uterus lining.

Explanation:

hope this helps!

____ The bristle worm living with the hermit crab.
A. Mutualism
B. Commensalism
C. Parasitism

Answers

Answer:

A. Mutualism

Explanation:

Mutualism The bristle worm living with the hermit crab.

Help will give brainlest

Answers

Answer:

that would be an acid, its sulfuric acid

Answer:

C. Acid

Explanation:

Human ovaries play an important role in reproduction. Which part of a
plant contains structures similar to human ovaries? (A)flower (B)leaf (C)stem (D)root

Answers

Answer:

c stem

Explanation:

what is the difference between emphysema and chronic bronchitis? Thanks.

Answers

The main difference between these conditions is that chronic bronchitis produces a frequent cough with mucus. The main symptom of emphysema is shortness of breath. Emphysema can sometimes arise due to genetics. An inherited condition called alpha-1-antitrypsin deficiency can cause some cases of emphysema.

Answer:The main difference between these conditions is that chronic bronchitis produces a frequent cough with mucus. The main symptom of emphysema is shortness of breath. Emphysema can sometimes arise due to genetics. An inherited condition called alpha-1-antitrypsin deficiency can cause some cases of emphysema.

Explanation:trust

Which organisms in this food web have a Producer/Consumer
Relationship?

Answers

Answer:

what food web?

Explanation:

Human reproduction takes place as internal fertilization by sexual intercourse. During this process, the erect penis of the male is
inserted into the female's until the male ejaculates semen, which contains sperm.
es )
A)
cervix
B)
ovaries
uterus
D)
vagina

Answers

Answer:

D) Vagina

The vagina is the inside of the female reproductive system leading to the cervix which separates the vagina from the uterus and ovaries where eggs are produced and stored until released monthly.

Which of the following is a physical adaptation for the underlined animal?

Answers

Answer:

Physical adaptations do not develop during an individual animal's life, but over many generations. The shape of a bird's beak, the color of a mammal's fur, the thickness or thinness of the fur, the shape of the nose or ears are all examples of physical adaptations which help different animals survive.

A student was asked to prepare a model of the rock cycle as it moves matter slowly through the Earth. The student creates a model,
as shown here. In order to revise the model, how should the lettered components be modified in order to create an accurate model?
Select all choices that apply
es )
A)
Letter A should represent igneous rock that is extruded from magma,
B)
Letters A and B should both be igneous rock, which is found near the
Earth's surface.
C)
Letters and B should be sedimentary rock, which is found under layers of
other materials
D)
Letter C should represent metamorphic rock which changes composition
under heat and pressure.
E)
Letter B should represent sedimentary rock that is buried by layers of sand
and deposited material.

Answers

Answer:

A) Letter A should represent igneous rock that is extruded from magma.

D) Letter C should represent metamorphic rock which changes composition under heat and pressure.

E) Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.  

Explanation:

Igneous rock comes from magma/lava. Sedimentary rock is buried as layers are deposited. The metamorphic rock is formed when one type of rock changes from one form to another. The single letter options are all right here.

The Rock Cycle is related to transformation of three basic Rock types into one another through the Plate tectonic activity, along with weathering and erosional processes. Hence Correct options are A, D, and E.

The Rock Cycle

It is a phenomenon through which three basic types of Rock transformed into one another. These three types of Rock are Igneous, Metamorphic, and Sedimentary rocks.

Therefore, to prepare a model which shows Rock Cycle, student need to have three types of Rock as mentioned in option A, D, and E.

A) Letter A should represent igneous rock that is extruded from magma.

D) Letter C should represent metamorphic rock which changes composition under heat and pressure.

E) Letter B should represent sedimentary rock that is buried by layers of sand and deposited material.  

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What can easily pass through the cell membrane?
What cannot pass through the cell membrane?
In passive transport, molecules, move ______the concentration gradient.

Answers

Answer:

i dont rlly get what ur asking but basically gasses diffues across the cell membrane from high conc to low concentration.

i dont know what passive transport is but active transport goes against the concentration gradient so im guessing passive is the opposite and goes with the conc gradient

Explanation:

Other Questions
Please help BY tomorrowA truck leaves a garage and travels east at a rate of 55 miles per hour. A car leaves the same garage 15 minutes later and travels east at a rate of 66 miles per hour. After how many minutes from the time the car leaves does the car overtake the truck? simplify the expression. explain when answering please! Write an equation of the perpendicular bisector of the segment with endpoints M(1,5) and N(7,1). What is the present value for $12,484 at 8% for two years Zaharia is 4/5 as tall as Zayden. Zayden is 3/5 as tall as Eric. Eric is how many times as tall as Zaharia? What did Zachary Taylor and Winfield Scott have in common?Both led troops US troops in the Mexican-American War.Both were elected president of the United States.Both were named vice president at different times.Both ran for president as members of the Democratic Party. On the Moons surface, lunar astronauts placed a corner reflector, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round-trip time. What percent correction is needed to account for the delay in time due to the slowing of light in Earths atmosphere? Assume the distance to the Moon is precisely 3.84108 m , and Earths atmosphere (which varies in density with altitude) is equivalent to a layer 30.0 km thick with a constant index of refraction n = 1.000293. Mr. Lopez was taking a drive to the mountains with his family they arrived at the mountains at 3:09 PM if the drive was two hours and 36 minutes long what time do Mr. Lopez family leave OMG PLS HELP WITH THIS IM PANICKING OMG I GOT A F IN MATH MY MOM JUST YELLED AT ME IM CRYING PLS HELP WITH THS- 32Select the correct answer.Two friends are sitting on a seesaw at the park. The height, h(t), of the left seat, in inches above the ground, is modeled by a sine function. Lettrepresent the time, in seconds, since the friends started seesawing.t012.3456.ht)2448240244824If the friends start seesawing with the plank in a level position, how long does it take for the friend in the left seat to move upward, downward,and then back to the initial position? PLZ HELP!!!How do these two accounts differ?Read the quotation by Dorothea Lange about thephoto "Migrant Mother" from Years of Dust.I saw and approached the hungry and desperatemother, as if drawn by a magnet. I do not rememberhow I explained my presence or my camera to her,but I do remember she asked me no questions. ... !did not ask her name or history. She told me her age,that she was thirty-two. She said that they had beenliving on frozen vegetables from the surroundingfields, and birds that the children had killed. She hadjust sold the tires from her car to buy food. There shesat in that lean-to tent with her children huddledaround her, and seemed to know that my picturesmight help her, and so she helped me. There was asort of equality about it.Now, read an excerpt about the photo from Years ofDust.O Lange describes a situation that is more desperatethan the true circumstances that Thompson'sdaughter explains.O Thompson's daughter describes a situation that ismore desperate than the true circumstances thatLange explains.O Lange describes a situation that is morelighthearted than the true circumstances thatThompson's daughter explains.O Thompson's daughter describes a situation that ismore lighthearted than the true circumstances thatLange explains. A real estate agent sold a house for $250,000 and received a5.5% commission on the sale. How much was the commission? Please helpUnlike the bombing of military targets in the United Kingdom, the London Blitz:Question 4 options:Killed many innocent civiliansForced the U.K. to surrenderWas carried out by JapanOccurred after the U.S. entered the war Chevron Phillips (CP) has put into place new laboratory equipment for the production of chemicals; the cost is $1,770,000 installed. CP borrows 48% of all capital needed, and the borrowing rate is 13.4%. In the 1st year, 25% of the principal borrowed will be paid back. The throughput rate for in-process test samples has increased the capacity of the lab, saving a net of $X per year. In this 1st year, depreciation is $362,000 and taxable income is $329,000.Required:a. What is the gross income or annual savings?b. Determine the income tax for the 1st year assuming a marginal tax rate of 40%.c. What is the after-tax cash flow for the 1st year? What is the gist of To Kill a Mockingbird Chapter 2 2. Which of the following is NOT anexample of a person's characteristics? DaringMotherTall Young 9. The ages of A and B are in the ratio 3:5. Four years later,the sum of their ages is 48. Find their present age One number is 6 more than other number. Also, 7 times the smaller number is equal to 6 times thelarger number. Find the two numbers. 2. Write down a number that has a value less than |14.7| 0.45g sample of mineral ore is analyzed for chromium and found contain 0.560mg Cr2 O3. Express concentration of Cr2O3 in sample as percent