Written by: Stephen Pegler
Sunday, January 07, 2007

1.  An organism that eats wastes and dead organisms is a   a.  consumer.        b.  decomposer.    c.  pollinator.        d.  producers.

2.  The source of energy for most autotrophs is
a.  water.        b.  the sun.        c.  heterotrophs.    d.  other autotrophs.

3.  Ponds and rivers are two types of   a.  marine ecosystems.     b.  rain forest biomes.    c.  freshwater ecosystems.    d.  estuary ecosystems.

4.  Which biome receives less than 25 centimeters of rain per year?    a.  desert               b.  grassland             c.  temperate rain forest        d.  tropical rain forest

5.  A large variety of plants grow in tropical rain forests because    a.  many insects live there.   b. the forest floor is very dark.   c. it has very good soil.    d. it is warm, humid, and rainy.

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