Protein synthesis is accomplished primarily by the interaction of which two cells structures?

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

Which direction does the energy flow in this energy pyramid ?

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.