Answer:
The correct answer is - option C. 2 billion.
Explanation:
Cyanobacteria or BGA are microscopic organisms that live in water bodies normally and make their own food. These are unicellular organisms that have been around 3 and a half million years and consider as the first photosynthetic organisms responsible for the availability of oxygen on earth. These cells are also considered as the cell that evolved in the eukaryotic cells by differentiation around 2 billion years ago. The aggregated form of the cells are known as the mats.
1. Which of the following is not a characteristic of natural selection?
A. More offspring are born than will survive to reproduce.
B. Mutations appear randomly.
C. Breeding pairs are chosen by humans.
D. Organisms that are better adapted are more likely to survive.
2. Which of the following statements are true about artificial selection.
A. Breeders can control which animals mate.
B. Breeders can control what mutations will appear in the offspring.
C. Both A and B are true.
D. Neither A nor B is true.
Answer:
1. C
2. A
Explanation:
Which of the following is a homogeneous mixture?
Explanation:
Blood
hope it helps!
......
Answer:
it definitely isn't spaghetti and meatballs but I think it's bloood
Which 2 (TWO) of the following statements is true for asexual reproduction?
a. Can occur in mammals through binary fission
b. More advantageous than sexual reproduction
c. Mode of reproduction for E. coli, a prokaryotic organism
d. Can occur in animals through fragmentation
Answer:
c and d are true
Explanation:
Mode of reproduction for Escherichia coli, a prokaryotic organism
Can occur in animals through fragmentation
The process by which organisms use oxygen to obtain energy from food is:
Answer:
cellular respiration.
Explanation:
"Cellular respiration is the process by which organisms combine oxygen with foodstuff molecules"
- Brittanica
Answer:
Explanation:
Cellular respiration i belive
Explain the term semiconservative replication
The hollow bones of a(n)______weigh less than its feathers.
A. Owl
B. Pterodactyl
C. Penguin
D. Dodo bird
please help ! :)
Answer:
I think it is A. Owl or D. Dodo bird
Explanation:
2. Which of the following is NOT a necessary input for the process of photosynthesis?
A. CO2, (carbon dioxide)
B. Sunlight
C. H20 (water)
D. 02 (oxygen)
1 - 2 paragraphs describing the full carbon cycle I NEED THIS ASAP PLZ
Answer: There are a few types of atoms that can be a part of a plant one day, an animal the next day, and then travel downstream as a part of a river’s water the following day. These atoms can be a part of both living things like plants and animals, as well as non-living things like water, air, and even rocks. The same atoms are recycled over and over in different parts of the Earth. This type of cycle of atoms between living and non-living things is known as a biogeochemical cycle.
All of the atoms that are building blocks of living things are a part of biogeochemical cycles. The most common of these are the carbon and nitrogen cycles.
Tiny atoms of carbon and nitrogen are able to move around the planet through these cycles. For example, an atom of carbon is absorbed from the air into the ocean water where it is used by little floating plankton doing photosynthesis to get the nutrition they need. There is the possibility that this little carbon atom becomes part of the plankton’s skeleton, or a part of the skeleton of the larger animal that eats it, and then part of a sedimentary rock when the living things die and only bones are left behind. Carbon that is a part of rocks and fossil fuels like oil, coal, and natural gas may be held away from the rest of the carbon cycle for a long time. These long-term storage places are called “sinks”. When fossil fuels are burned, carbon that had been underground is sent into the air as carbon dioxide, a greenhouse gas.
Recently, people have been causing these biogeochemical cycles to change. When we cut down forests, make more factories, and drive more cars that burn fossil fuels, the way that carbon and nitrogen move around the Earth changes. These changes add more greenhouse gases in our atmosphere and this causes climate change.
The element carbon is a part of seawater, the atmosphere, rocks such as limestone and coal, soils, as well as all living things. On our dynamic planet, carbon is able to move from one of these realms to another as a part of the carbon cycle.
Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But since the start of the Industrial Revolution about 150 years ago humans have burned so much fuel and released so much carbon dioxide into the air that global climate has risen over one degree Fahrenheit. The atmosphere has not held this much carbon for at least 420,000 years according to data from ice cores. The recent increase in amounts of greenhouse gases such as carbon dioxide is having a significant impact on the warming of our planet.
Carbon moves through our planet over longer time scales as well. For example, over millions of years weathering of rocks on land can add carbon to surface water which eventually runs off to the ocean. Over long time scales, carbon is removed from seawater when the shells and bones of marine animals and plankton collect on the sea floor. These shells and bones are made of limestone, which contains carbon. When they are deposited on the sea floor, carbon is stored from the rest of the carbon cycle for some amount of time. The amount of limestone deposited in the ocean depends somewhat on the amount of warm, tropical, shallow oceans on the planet because this is where prolific limestone-producing organisms such as corals live. The carbon can be released back to the atmosphere if the limestone melts or is metamorphosed in a subduction zone.
Students in a biology class conduct an experiment to determine the effect of temperature on the rate of photosynthesis in a plant. They place an Elodea plant into a test tube filled with water. Then the students place the test tube under a light and slowly increase the temperature of the water. They record their results and display them on a graph as shown.
Which statement is supported by the graph?
A. The production of water molecules is greatest in Section L
B. The number of carbon dioxide molecules in the beaker is greatest in section N
C. The rate of oxygen production is greatest in Section M
D. The rate of oxygen production is lowest in Section M
Answer:
Explanation:
C. The rate of oxygen production is greatest in section M.
When your muscle cells do not get enough oxygen, fermentation can create?
Answer:
Your muscles are forced to work without enough oxygen. In these situations, your working muscles generate ATP anaerobically (i.e., without oxygen) using a process called fermentation. Fermentation is beneficial in that it can generate ATP quickly for working muscle cells when oxygen is scarce.
Explanation:
When oxygen is not present or if an organism is not able to undergo aerobic respiration, pyruvate will undergo a process called fermentation. Fermentation does not require oxygen and is therefore anaerobic. Fermentation will replenish NAD+ from the NADH + H+ produced in glycolysis.
People are more likely to seek treatment if they
A. are in a minority
B. live in a rural community
C. have medical insurance
D. have a diagnosis
Answer:
C. have medical insurance
Explanation:
People are more likely to seek treatment if they D. have a diagnosis as it helps in the treatment of disease.
The clinical diagnosis lets in a clinical expert chart a listing of clinical signs after which evaluate them to different data. A high-quality fitness final result is primarily based totally one scale of being alive and not using a long-time period results to death.
What is the diagnosis?The act of spotting a disorder from its symptoms and symptoms and signs the realization this is reached following and trying out .The prognosis turned into pneumonia.
Thus it is well explained.
To learn more about the medical insurance refer to link :
https://brainly.com/question/1941778
help fast please dont say anything if you don't know it
Are there energy alternatives that emit less CO2 than natural gas does? If so, are these solutions equally available everywhere on Earth?
Answer:
Yes. Hydropower, Wind Power, and just about any other alternative produces less CO2 than natural gas
Explanation:
Describe the function of cycle of checkpoints
A checkpoint is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division. ... The spindle checkpoint, at the transition from metaphase to anaphase.
i hope this helped <3
All of the following are probable ways to de-escalate conflict between groups except Please select the best answer from the choices provided
a. reestablishing communication that has stopped
b. Discounting extreme opinions of uncompromising group members
c. taking time to cool down emotionally
d. reducing all communication after conflict occurs
Answer: reducing all communication after conflict occurs
Explanation:
Reducing all communication after conflict occurs, thus correct option is D.
Why communication is necessary for any conflict?Good communication in conflict situations eases tension, builds trust, strengthens relationships and makes people feel at ease, because they are mutually understood.
At the same time, it remains firm on important points Reducing all communication after the conflict is not the way to de-escalate any conflict between the group.
.Learn more about de-esclate conflicts here:
https://brainly.com/question/1057592
#SPJ5
Help please
What is the correct term for digging tunnels deep into the Earth to reach a desired mineral?
surface mining
sub-surface mining
mountaintop removal
extraction mining
Answer: surface mining
Explanation:
I need help pls hook me up
Answer:
B. Madreporite
Explanation:
Can somebody help ?!!!!
Answer:
speed=distance÷time
2m/s,1.5m/s,1.25m/s,0.5m/s
Explanation:
speed=distance÷time
20/10=2m/s
30/20=1.5m/s
50/40=1.25m/s
30/60=0.5m/s
What are the characteristics of a dicot?
netted leaf veins, two cotyledons, vascular bundle
parallel leaf veins, two cotyledons, vascular bundle
netted leaf veins, two cotyledons, Vascular bundles
netted leaf veins, one cotyledon, vascular bundles in
Answer:
the answer is the first one
dicot have not vexation and they have two cotyledons while the monocot have one cotyledons.
example of monocot can be maize,wheat in total all cereal are monocot while all legumes are dicot
HOPE IT HELPED
Answer:
MONOCOT, DICOT, DICOT, MONOCOT
Explanation:
someone pleaseee help me with this !!
IF ANYONE CAN PLEASE HELP ME QUICK I’D APPRECIATE IT
What would be the most likely effect of adding wolves to the park?
A. Increased balsam fir population
B. Decreased cottonwood population
C. Increased snowshoe hare population
D. Increased moose population
why do many earthquakes and volcanoes occur along the Ring of Fire?
Answer:
Explanation:
The abundance of volcanoes and earthquakes along the Ring of Fire is caused by the amount of movement of tectonic plates in the area. Along much of the Ring of Fire, plates overlap at convergent boundaries called subduction zones. As rock is subducted, it melts and becomes magma
Which is a term for a type of detritivore?
Carnivore
Decomposer
Herbivore
Omnivore
Answer:
Decomposer
Explanation:
Decomposers eat dead organsims carnivores rarely
Answer:
C. Decomposer
Explanation:
A.P.E.X
how to write a narrative story?
Answer:
Start with action or dialogue.
Ask a question or set of questions.
Describe the setting so readers can imagine it.
Give background information that will interest readers.
Introduce yourself to readers in a surprising way.
Explanation:
Answer:
Narrative essays/stories are often anecdotal, experiential, and personal—allowing students to express themselves in a creative and, quite often, moving ways. So, in short, it's an essay about your life with details, events, etc.
Explanation:
Narrative essays/stories should include:
an introduction, plot, characters, setting, climax, and conclusion.must have a purpose; think of this as the thesis of your story.the essay should be written from a clear point of view; essays to be written from the standpoint of the author (you); however, this is not the sole perspective to be considered. Creativity in narrative essays oftentimes manifests itself in the form of authorial perspective. narrative essays are effective when the language is carefully, particularly, and artfully chosen. Use specific language to evoke specific emotions and senses in the reader. the use of the first person pronoun ‘I’ is welcomed; though it is welcomed it is not necessary—nor should it be overused for lack of clearer diction.have a clear introduction that sets the tone for the remainder of the essay. Do not leave the reader guessing about the purpose of your narrative; you are in control of the essay, so guide it where you desire (just make sure your audience can follow your lead).I hope that this helps you! I know it was a lot to read, but it's worth it. Have a nice night! :D
Which of the following is not considered a living thing?
a. soil
b. oak trees
c. sharks
d. pandas
Plzzz help meee!!!!!
Answer:
its a
Explanation:
Which statement is False?
A.) Both Eukaryotic and Prokaryotic cells have genetic information (DNA), cytoplasm, ribosomes and a cell membrane.
B.) The cell membrane (made up of lipids) is "semi-permeable" which means it only let's certain materials in and out, and helps keep cells stable, which is known as "homeostatis".
C.) Cells contain a cytoskeleton, which is a collection of fibers that provide support for organelles and aides in the cells internal movements.
D.) Eukaryotes do not have a nucleus, nor do they have "membrane bound organelles", like the golgi apparatus or the endoplasmic reticulum (ER)
Answer:a
Explanation:
WILL GOVE BRAINLY!!
Which product of respiration is considered waste material and leaves the alveoli?
A. oxygen
B. water
C. carbon dioxide
D. carbon monoxide
Answer:
C
Explanation:
Carbon dioxide
Which of the following blood vessel carries impure blood from heart to
lungs for purification? *
Pulmonary vein
Pulmonary artery
Capillaries
None of them
Other:
Answer:
The pulmonary artery carries deoxygenated blood to the lungs. The blood becomes oxygenated in the lungs. Oxygenated blood leaves the lung via the pulmonary vein. Blood enters the left atrium.
Explanation:
Answer:
Pulmonary Artery
Explanation:
Where can the element iron be found in nature?
So Iron can be found in many many different things.
•The core of the earth is majorly composed of Iron, Sulfur, and Nickel.
•It can be found In minerals such as Magnetite and Taconite.
•It can be found In meat, poultry, and fish.
How do the products of the reaction relate to the phenol red test and the splint test?
Answer:
The answer in this question is show you made Sodium Hydroxide and Hydrogen Gas.