Because ecosystems don't change over one day, they change over a long period of time. Plus, something that happens may be because of more than just one change.
Answer:
b
Explanation:
b/c proton + neutron=mass number and
mass number - proton= neutron
Answer:
mechanical energy to electrical energy to light energy
Answer: There is no list in your question. But the three factors in which natural selection occurs are:
1. A struggle for existence,
2. Variation and
3. Inheritance
Explanation:
Darwin’s theory of natural selection is the way in which organisms change overtime.
These changes allow organisms to become better adapted to their environment and increase their chances for survival.
The three major factors through which natural selection occurs are:
1. A struggle for existence,
2. Variation and
3. Inheritance
Darwin’s theory of natural selection will occur if the three conditions above are met and unless these factors are in place, natural selection will not occur.
