What are two ways that different species can divide up resources?

The competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche (competing for identical resources). Two species whose niches overlap may evolve by natural selection to have more distinct niches, resulting in resource partitioning.

Explanation:hope this helps happy hallowen

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.