Aerobic Cellular Respiration is the process by which and oxygen are used to produce usable energy A. carbon dioxide
B. glucose
C. water
D. sunlight

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent  

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.