On because of the suns heat. So, it would be on to protect it from sunburn.
Answer:
water is what earth is mainly made of. our bodies are also mainly water.
Due to the reduction in large industrial emmissions such as fertilizers into water zones.
The correct answer is B !! Both are interdependent thus forming a mutualistic association !!
As both can not live without each other thus making obligate !!
so They share obligate mutual association !! Go with B !!
