In a particular city in one year , the birth rate is 33 per 1,000 people. the death rate is 12 per 1,000 people. what is the city's annual population growth?

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

Anonnative species is best described as a species that a. does not normally live in an area b. has no permanent home c. is a poor predator d. increase biodiversity

The part of the eye that closes and opens to let light in is .