As an airplane rises through the atmosphere, machines cause the pressure inside the cabin to decrease. Based on your observations from the Can Crush Lab, why is this change in pressure necessary?

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above

There are only about 250,000 known fossil species. true or false

Are the brightest stars low magnitude or high magnitude?