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The biome that can be called a frozen desert because of cold temperatures and a small amount of rainfall is the:

True or false. The same sequence of biomes is seen when going up a mountain as when traveling from the equator to the south pole

Which population(s) on the graph below would be considered in logistic growth?

Red tides (algae blooms) are caused by:

Carbon is needed by living things to:

In the following food chain: grass is eaten by a caterpillar which is then eaten by a frog which is then eaten by a raccoon The producer would be:

A density dependent factor regulating population size would be:

Producers are important to an ecosystem for:

Acid rain is caused by:

The abiotic source of phosphorus is