Which is the least likely reason that pigs have been chosen as donors for humans in the process of xenotransplantation?

free of known diseases

cost-effective to raise

same dna as humans

quick breeding

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.