As the world evolves, there is a change in the ecosystem, and with that comes the fluctuation. Organisms have have changing populations as they adapt, slowly die out, or thrive in the new ecosystem.
Alright.
So the picture is a little hard to see, so bare with me.
Evaporation is where the water is coming out of the ocean up into the air.
I think that is rain happening above the mountain? If so, that is precipitation.
The little river thing coming out of the mountain is runoff.
I cant really see much else on the picture though, so you might need someone else to help you there.
Answer:
Plant biochemistry.
Plant ecology.
Plant evolution.
Plant physiology.
Plant anatomy and morphology
Because sometimes it is only a slight tremor, or happens so underground u dont even feel it