Ancient prokaryotes may have entered primitive eukaryotic cells, remained there, and evolved into organelles. InferIs it likely that nonphotosynthetic prokaryotes could have evolved into chloroplasts? Explain your answer.

Scientific thinking: what clues about biology might road kill provide?

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content