Which of the following must occur for speciation to happen

Which describes radioactive decay of a substance

The largest unit within which gene flow can readily occur is a

Which statements about a food chain are true? choose all answers that are correct. a. plants are the first living organisms in food chains on land. b. the plants in a food chain are called herbivores. c. all food chains on land begin with energy from the sun. d. carnivores in a food chain eat only plants.