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In this inquiry, scientists wanted to know how much carbon is held on Earth by the world’s forests. They also…
In this inquiry, scientists wanted to know how much carbon is held on Earth by the world’s forests. They also wanted to know whether this number is staying the same,...

When lightning or other forms of ignition start a fire in a forest, there is a chance of a wildfire. Wildfires may be started…
When lightning or other forms of ignition start a fire in a forest, there is a chance of a wildfire. Wildfires may be started by a natural cause, such as lightning, or they may be started...

When lightning or other forms of ignition start a fire in a forest, there is a chance of a wildfire. Wildfires may be started…
When lightning or other forms of ignition start a fire in a forest, there is a chance of a wildfire. Wildfires may be started by a natural cause, such as lightning, or they may be started...

Mountain pine beetles are a natural part of the environment in forests of the Western United States. However, because of…
Mountain pine beetles are a natural part of the environment in forests of the Western United States. However, because of changes to the environment, mountain pine beetles have caused more...

For each pair of words, identify whether the pair are antonyms or synonyms by writing an “A” or “S” beside…
For each pair of words, identify whether the pair are antonyms or synonyms by writing an “A” or “S” beside the pair.

For each pair of words, identify whether the pair are antonyms or synonyms.
For each pair of words, identify whether the pair are antonyms or synonyms.

Test your knowledge on case studies, decompositions, and endangered species.
Test your knowledge on case studies, decompositions, and endangered species.