Some activists believe that using animals in scientific experiments is unethical. what is the ethical viewpoint that leads to this opinion?

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

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

The first generation of offspring from the cross of two parents is called the a.f1 generation b.f2 generation c.short generation d.p generation