The correct answer that fits this description is: Toxin
It could either cause runoff or floods
Answer:
both could be correct
Explanation:
It usually depends on how fast or how severe the change is, if its mild or happenes slowly over time they may adapt, if it is extreame or happenes very quickly the species could very well die out.
The answer to this question would be: necrosis
Necrosis is the death of cell caused by various injury, one of them is oxygen starvation. Cells need a constant supply of energy to sustain its life. Without oxygen, the energy produced by cells will be decreased. When the energy is depleted, the cell will not be able to use ion pumps or any organelle that need energy. This will slowly damage the cell until it dies.