Which use pedicellariae to keep the body surface free of debris?

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

What in scientific term why the salty popcorn causes this thirst

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -