Apyramid of numbers differs from an ecological pyramid because it
a. displays the number of organisms at each trophic level.
b. shows the amount of energy within each trophic level.
c. attempts to describe a food chain or food web.
d. is organized by trophic levels, while an ecological pyramid isn't. (its a just did test

Amoeba sisters video recap pedigrees

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities