Most ciliates have two
a . cilia
b. cell walls
c . cell membranes
d. nuclei

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

Darwin’s hypothesis about how life changes over time is now called?