What were the two different types of australopithecines?

A. erect, knuckle-walker
B. hunting, gathering
C. gracile, robust
D. arboreal, terrestrial
E. carnivorous, omnivorous


Answer: C

Biology & Microbiology

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Lamellipodia

A) are found in the basal lamina. B) add structural rigidity to cells. C) contain microtubules. D) are thin sheets of cytoplasm use for cell movement. E) do not involve actin or tubulin.

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Which is a reason why most exotic species’ introductions fail?

a. inability of the species to adapt to its new environment b. close oversight by environmental regulatory agencies c. overharvesting of the species for commercial purposes d. limitations on the transportation of invasive species

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When you exhale, you

A) exchange CO2 for O2. B) take up oxygen and release carbon dioxide to the blood. C) take up carbon dioxide and release oxygen. D) remove CO2 from the body.

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Environmental pressures on a population, such as temperature and pH, are density ________ factors

Fill in the blank(s) with correct word

Biology & Microbiology