Mechanical digestion takes place in the mouth
Answer: In the atmosphere, nitrogen exists as a gas (N2), but in the soils it exists as nitrogen oxide, NO, and nitrogen dioxide, NO2, and when used as a fertilizer, can be found in other forms, such as ammonia, NH3, which can be processed even further into a different fertilizer, ammonium nitrate, or NH4NO3.
Explanation:
Answer: I’m not sure how I am supposed to answer this question but I would just draw an endocrine system and nervous
Explanation:
"An example of mutualism in the rainforest is the pollination of the Durian tree by bats."