What do the three $R$s refer to in order to save the environment? Which one of these would be the best for the environment?

Quote three instances where human intervention saved the forests from destruction.

The most appropriate definition of a natural resource is that it is a substance/commodity that is

We often observe domestic waste decomposing in the bylanes of our homes. List four ways to make the residents aware that the improper disposal of wastes is harmful to the environment and also for their own health.

Opposition to the construction of large dams is due to

"We need to use fossil fuels judiciously." Justify the statement.