The most abundant biochemical compound in living
things is the polymer named

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia