I may be wrong but maybe oil
Answer:
1. It seeps in the ground and becomes ground water.
2. It falls back down to earth as Rain, Hail and Snow.
3. Water moves through the living organisms in an ecosystem
4. Transportation is the process that moves things like water from one place to another.
Explanation:
I passed Biology last year in 10th so I recalled my biology stuff.
The algae increase the autotrophy by offering photosynthesis to the fungi in the lichen organism.
A lichen is an organism consisting of a symbiotic association between a fungus (the mycobiont) and algae. The mushroom brings water and mineral salts. The alga produces, by photosynthesis, various organic compounds of which it gives a part to the mushroom.
