Which “sphere” are involved when sedimentary rocks form from parts of the sea shells at the bottom of the ocean a. biosphere; atmosphere; geosphere b. geosphere; hydrosphere; biosphere c. geosphere; exosphere; hydrosphere d. hydrosphere; biosphere; atmosphere

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.

You find a fossil that you are sure shows evidence of bipedalism. you know this because which of the following anatomical traits is present? a. thighbones that angle in toward the knees b. a narrow pelvis c. opposable hallux d. posterior position of the foramen magnum