Answer the following question-

It will increase

Explanation:

The graph increased initially because the rate of photosynthesis increases with the increase in the amount of carbon dioxide. ... After reaching that point, increase in the concentration of carbon dioxide has no effect on the rate of photosynthesis.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.