Question

grasslands are found in temperate regions where rainfall rates are between 25 and 75 centimeters (cm) per year. if the rainfall rates over the next 100 years increased to 200 cm per year, similar to that of tropical rainfall rates, how would the region most likely be affected?
less solar radiation would enter the region.
larger plants and trees would take over the region.
the region would become a habitat for large and small sea organisms.
the primary producers in the region would have less ability to recycle carbon.

Explanation:

Grasslands have low rainfall. Tropical regions have high rainfall and support large plants and trees. If grassland rainfall increases to tropical levels, the environment becomes suitable for larger plants and trees. Solar radiation isn't directly affected by rainfall increase. The region is terrestrial, not aquatic (so not for sea organisms). Higher rainfall doesn't reduce carbon - recycling ability of primary producers; in fact, more plants (if they grow) could enhance it.

Answer:

Larger plants and trees would take over the region.