What is the most abundant gas in the atmosphere? (1 point) oxygen nitrogen carbon dioxide hydrogen

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.