B) Physiological because C is relating to the inside of the organism, A is relating to the forming part of a building or another item and D is reacting to their physical surroundings, so the only other answer would have to be B because in physiological in animals and humans alike, they change something of their physical self's to attain to the environment around them.
A person who specializes in the study of animals is called a zoologist. Zoologists who study certain kinds of animals have their own names.
Weather condition , temperature , and food ability
Answer:
Renewable energy is over 90% of the energy use in the united states