D). Many different experiments are performed and repeated.
Answer:
two main types tropical and temperate
Explanation:
There are two main kinds of grasslands: tropical and temperate. Examples of temperate grasslands include Eurasian steppes, North American prairies, and Argentine pampas. Tropical grasslands include the hot savannas of sub-Saharan Africa and northern Australia.
Can you please take a photo that's not upsidedown I might be able to help.
I think it should be D. A loss in biodiversity due to catastrophic event.
