Would it be possible for an organism to construct a protein molecule without eating protein? Why?

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Explain how scientists use geologic time to determine the age of landforms.

20 the main source of energy for our planet comes from the