Science Multiple Choice Test

What role do bacteria play in soil ecosystems?

What is the driving force behind the water cycle?

Which organism is a producer?

Which is a biotic factor?

Which includes both an abiotic factor and a biotic factor?

Which process helps keep temperatures on Earth from becoming too hot or too cold?

During the carbon cycle, ________take in carbon dioxide from the atmosphere.

Which best represents a food chain?

A person who ate a salad made of lettuce, tomatoes, cheese, and ham is a(n)

In which process do producers use chemical energy and make food?

What organisms help break down dead leaves in an ecosystem?

Which process converts atmospheric nitrogen to a from organisms can use?

Which is true of energy in ecosystems?

Which organism would most likely appear at the top of an energy pyramid?

During which process is oxygen gas released into the atmosphere?

Which is true of the amount of matter in ecosystems?

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