The current knowledge concerning cells is the result of investigations and observations of many scientists. the work of these scientists forms a well-accepted body of knowledge about cells. this body of knowledge is an example of
a. hypothesis
b. controlled experiment
c. theory
d. research plan

and why would be

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

1. -define adaptation2 explain darwin's theories of descent with modification and natural selection in detail3. -explain how each of these provides evidence for evolution: a. -fossil record, including superposition and transitional fossilsb-anatomy, including homologous structuresc-biological molecules, including dna and proteins4. -explain the difference between convergent and divergent evolution.5. -define and give three examples of artificial selection6. -define and give one example of coevolution.7. -explain biodiversity and how it benefits humans.8. -explain a type of population lest affected by environmental change.