Ozone (O3) is a molecule made up of three oxygen atoms. Ozone is always present in the Earth's atmosphere in low concentrations. This presence of ozone in the Earth’s atmosphere is referred to as the...

Threatened species are any species that is facing the danger of being vulnerable to endangerment in the near future. Endangered species is a sub-category of the threatened category in the IUCN’s Red list....

The concept of reuse is when a product that is newly purchased is put to another use after the first use is completed. Recycling is processing of used materials (waste) into new products to prevent waste of...

Global warming is when the average temperature of the Earth’s atmosphere and the oceans rise. Greenhouse effect is the retention of the heat by the greenhouses gases on the surface of the Earth, allowing the...