Answer: option A - bottleneck effect
Explanation:
Whenever sudden change caused by human or natural disasters occurs in the environment leading to the reduction of organisms or biodiversity present to a lower size, such condition is referred to as BOTTLENECK EFFECT.
The root of the plant is what takes in water.
Do you have any choice answers? As far as I know, the organisms that appeared first was micro-organisms. Hope this helps.
Photosynthesis and respiration are reactions that complement each other in the environment.
