When a wave moves through an opening in a barrier, it a. is reflected. b. bends and spreads out. c. forms nodes and antinodes. d. speeds up.

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?