Organism in an eniornment can compte for food
Because back then before pangaea occured the oceans we see today where all one before now they are seperated hope this helps.
Answer:
The first one and second one
Explanation:
We should stop polluting the rivers and throwing trash all over the place, and cut down less trees, since we are harming the environment for the animals and plants.
This is <span>B. The nitrogen base</span>
