Q.1 : Tetrapods include:

a. organisms descended from ancestors with four limbs

b. birds

c. whales

d. snakes

e. all of the above

Q.2: Evolution occurs when:

a. individuals within their lifetimes change in response to the
environment

b. the average value of trait in a population changes from one
generation to the next

c. a and b are both correct

d. Neither a or b is correct