Invasive species. Native grasses have evolved with the normally-occurring grazing organisms to achieve a level of reproduction which sustains the grasses despite the grazing. An invasive species disrupts this ecological balance that took millions of years to develop by eating the grass at a rate that exceeds the rate for the grass to re-seed itself and maintain its own population. The invasive species easily decimates the grass population.
Answer:
[The recent activities of fossil fuel combustion has had adverse effects on the ozone layer]- B.
The testicles produce the sperm and the hormones
