Which of the following is a way in which earth material is returned to the surface? a. a volcanic eruption b. melting from pressure and heat c. weathering and erosion d. deposition

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these