Which of the following is not a type of rock?

How are metamorphic rocks formed?

Burning fossil fuels adds carbon dioxide to the atmosphere. If we continue to add carbon dioxide to the atmosphere at the current rate, how will this affect the carbon cycle?

The cycle where plants use carbon dioxide exhaled from humans and turn into oxygen and food for themselves is which cycle?

In the oxygen cycle, which group of organisms replenishes a large portion of the atmospheric oxygen supply?

What step in the rock cycle would be required to change an igneous rock into a sedimentary rock?

The carbon cycle relies on the use of....

In the nitrogen cycle, nitrogen is continuously recycled. Which types of organisms break down nitrogen compounds in dead organisms and recycle them into the soil?

What is the role of bacteria in the nitrogen cycle?

We know the carbon cycle involves moving carbon around the earth in a cycle. Plants and trees join in the carbon cycle in a couple of ways. Which one will clean carbon out of the air?

The oxygen found in the water molecule (H20) is the oxygen that fish can use to breathe.

When humans burn fossil fuels, most of the carbon quickly enters the ________ as carbon dioxide.

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