If we can see water, can fish see air? But since we can't see air, can fish not see water?

two different pieces of evidence a scientist might study to better understand of Evolutionary change include

what is the function of a circulatory system It brings a transport liquid into close contact with all cells in the body Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?

Is breathing completely involuntary

Assume that a base addition occurs early in the coding region of a gene. Is the protein product of this gene expected to have more or fewer (state which) altered amino acids compared with the original gene with a base deletion late in the coding

Which process can lead to speciation? A. Over time populations may differ only in coat color or limb length. B. Over time two populations will occasionally interbreed. C. Two populations become reproductively isolate; no inter-mating occurs. D.

What can scientists infer about the period of very early Earth from the lack of fossilized remains of oxygen breathing animals and the dominance algae?

What part of the cell membrane that recognizes chemical signs

What is a called when organisms that cannot make their own energy-rich molecules?

How did Mendel make the F1 generation for his experiments?

Write a paragraph about an insects habitat.