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  1. K

    By the time war broke out in August 1914, the French and British had 12,000

    machine guns? while the Germans only had a few hundred. TRUE / FALSE
  2. K

    Why is the world's loss of biodiversity a source of concern?

    A. Humans depend upon other organisms for food and oxygen. B. Species extinctions have been rare throughout history. C. Loss of biodiversity is not a concern because extinctions are common. D. Both (a) and (b)
  3. K

    Why is biodiversity important to ecosystems?

    A. It allows animals to feed permanently from one type of plant. B. It increases at each level of the food chain. C. It helps populations adapt to ecological changes. D. It reduces the number of insects in a given ecosystem.
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