I NEED HALP ASAP PLEASE Choose an organism and predict a trait that would be helpful for its survival. Do you think this could be an evolutionary change? What would have to happen for this trait to be expressed?

Environmental differences within ecosystems are generally caused by

The green colored pigment in chloroplasts is? a. nitrogen b. chlorophyll c. chlorophorm d. chlorofloromethane

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