3. Discuss the evolutionary relationships among the four classes of sponges.

Which of the following is not a characteristic of carnosaurs? a. long narrow skulls b. strong forelimbs c. horn projecting from their skulls d. none of the above

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism