Environment, predators, and natural selection.
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The precambrian era makes up about 90% of the earths history, but there was little to no living organisms at the time other than microscopic ones. The first eukaryotes were found in the cambrian period after the precambrian period, not only that but at the end of the precambrian era in the Proterozoic era there was a mass extinction of about 70-80% of all living organisms
The answer is b equal and opposite horizontal forces
Answer:
Explanation:
Carrying capacity, or the maximum number of individuals that an environment can sustain over time without destroying or degrading the environment, is determined by a few key factors: food availability, water, and space.20-Nov-2018
Answer:
All living cells release energy from food molecules through cellular respiration and/or fermentation. Some cells make food molecules using light energy through the process of photosynthesis.
Two ways to cells get energy: cellular respiration and fermentation.
Fermentation: Fermentation, chemical process by which molecules such as glucose are broken down anaerobically.
Cellular respiration: Cellular respiration is the process through which cells convert sugars into energy. To create ATP and other forms of energy to power cellular reactions, cells require fuel and an electron acceptor which drives the chemical process of turning energy into a useable form.
<h3><em>Hope this helps, I tried to make it as simple as possible because I know how confusing these things can get!! Have a nice day :) -KindnessMatters-</em></h3>