This drawing shows the internal anatomy of a sponge. What does the arrow in the middle represent?

A. the direction of the sponge's travel through the water

B. the path sperm take to fertilize the egg of a sponge

C. the flow of water through the body of a sponge

D. the path food takes through the digestive system of a sponge

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

2. you__turn left on a red light if you are in the left-most lane of a one-way street, you're turning into the left-most lane of a one-way street, and no nearby sign prohibits the turn.