Answer:
1. Renewable
2. Vegetation
3. Reforestation
I think this is right. I am not sure. Trust your instincts.
Elephants, who are important grazers, are instrumental in transforming woodlands into grasslands. This has a tremendous impact on other species that depend on the grass for their survival. The significance of the elephant in this example is B. keystone species.
The answer is A: salt content
Management because it is holding back how many can be sold.