Explain the evidence that supports the endsymbiotic theory of chloroplasts and mitochondria

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.

Prokaryotic and eukaryotic cells are different in many ways other than the presence or absence of a nucleus. if both archaebacteria and eubacteria are prokaryotic cells, then why are archaebacteria more closely related to eukaryotic cells than they are to eubacteria?

The wind speed in the region between cities a and b was probably the greatest at noon on which day?