19. annelids are to lophotrochozoans as are to ecdysozoans.

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

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Monitor and apply fix up stratorgies