By what method do bivalves gain food for nutrition? They absorb the nutrients they need.
They are filter feeders.
They use their radula to scrape objects to use for food.

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

What was the land like over 500 million years ago? what was under the sea?