A marine biologist observed an organism. It had openings on its body through which food particles and water passed. Which phylum does the organism belong to?

Cnidaria

Porifera

Platyhelminthes

What happens as a population approaches carrying capacity?

What if the function of a vacuole

Two albinos marry and have four normal children. explain how this happened.

Witch organism obtain energy from or decaying matter

Which characteristics belong to angiosperms? Check all that apply. 1. vascular 2. tissue 3. roots 4. fruits 5. cones 6. flowers

Which of the following aren't eukaryotes? plants bacteria animals fungi

In pea plants, smooth pea shape is dominant to wrinkled pea shape. If a pea plant that is true-breeding for smooth pea shape is crossed with a pea plant that is true-breeding for wrinkled pea shape, what will be true of the offspring?

Are atoms completely lost or gain in a chemical re

Epinephrine and norepinephrine that are released from the adrenal glands affect target tissue for a longer period of time than the same substances released from neurons at their peripheral receptors. why?

Interpret this phrase: "we respire because our cells respire"