Answer:
I think its the third one.
Explanation:
The mitochondria produces energy and respiration takes place there,so it cant be that.
I hope this helps in any way.
Explanation:
Positive : creating forest reserves, proper recycling of waste, etc.
Negative : Bush Burning, improper waste disposal, etc
Explanation:
slope(m)=tana,where a is angle made by particular line in x- increasing sense.for a=90, m becomes infinitely large which can be termed as undefined.