A scientist discovers a fossil of an animal, and place is it in the fossil record. The organisms bones are similar to the bones of animal tea, which appears earlier in the fossil record, which conclusion is most reasonable.

A. the fossils are from a descendent animal of T,

B. The fossils came from the same organism.

C. The fossils are from animals that lived at the same time.

D. The fossils are from an ancestor of animal T.

Which of the following discoveries would provide the best evidence that Earth’s continent had once been part of a large landmass that had since broken apart?

Which of these are the two major sources of nitrate pollution in rivers?

a. the burning of fossil fuels by factories and cars

b. animal wastes and the burning of fossil fuels by cars

c. animal wastes and fertilizers

d. fertilizer runoff and the burning of fossil fuels by cars

e. animal wastes and the burning of fossil fuels by factories