eleven organisms express the recessive allele in a population 2,646. how many organisms are carriers?

Environmental differences within ecosystems are generally caused by

The negative impacts of nonnative species generally outweigh the positive impacts

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