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.
Malfunction might lead to organ diseases, and might alter the body metabolism.
I believe the answer is C (recycle them, but not through the regular trash disposal)
I hope this helps :)