Several factors contribute to the maintenance of grassland ecosystems. 1
Describe one way that grazing animals, such as bison or cattle, help to maintain grassland ecosystems.
2
Explain how seasonal fires benefit grassland ecosystems

What was the main aim of the northwest ordinance of 1787

Explain the popular saying "we are made of stardust. how are we made of stardust? use scientific vocab.

The sun a. will become a red giant within two to three million years b. is in its main sequence, which willlast thousands of years c. is in its main sequence, which will last billions of years. d. will explode as a supernova after its main sequence