Yellowstone national national park has an average of about 4500 bison living in it. the park covers 33472 square miles what is the population density of bison living in yellowstone

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area