Which statements are true about a grassland ecosystem? Grasslands receive less than ten inches (twenty five cm) of rain per year.
A large variety of trees grow here,
Much grassland has been converted to grow crops,
Many birds of the grasslands build their nests on the ground,
The soil is rich in nutrients,
Europe and Asia are the only continents with no grasslands,

The correct answers would be Much grassland has been converted to grow crops, The soil is rich in nutrients, and Many birds of the grasslands build their nests on the ground.

Explanation:

I hope this helps you:)

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225