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.
Answer:
Ponds:
Shallow & warm
A lot of plant and animal life
Many nutrients
Lakes:
Large, deep, cold
Little sunlight near bottom
Plants mainly along the shore
Glyccocayx sugar coat that surrounds cells
Has reached it's tipping point, I think. Your question was not very specific, so hope this helps.
