Match the following:

1-B, 2-C, 3-D, 4-A

In Karanataka, Appiko movement, similar to Chipko movment started when the felling of trees was witnessed in Salkani forest in Sirsi district.

When the demand from environment increases its carrying capacity and wastes are generated beyond the absorptive capacity, it results in environmental crisis.

Ozone depletion refers to the phenomenon of reduction in the amount of ozone in the stratosphere.

Global warming refers to the increase in greenhouse gases which eventually results in the increase of average temperature on earth. Example of greenhouse gases include: Methane gas, Carbon dioxide, Nitrous oxide etc.