Showing posts from November, 2021
COAL AND PETROLEUM (FOSSIL FUELS) Coal and petroleum, formed from degraded biomass millions of years ago, are exhaustible resources. Petroleum is estimate…
WATER FOR ALL Water is a basic need for all terrestrial forms of life. Besides rainfall patterns, human intervention influences water availab…
FORESTS AND WILDLIFE Forests are biodiversity hotspots . Biodiversity of an area is measured based on the number of species and the range of different lif…
Economic development is linked to environmental conservation. Thus, sustainable development implies a change in all aspects of life. Overexploitation of natura…
HOW DOES OUR ACTIVITY AFFECT THE ENVIRONMENT? Ozone Layer and Its Depletion Ozone (O 3 ) is a deadly poison. However, at higher levels o…
The biotic and abiotic factors which surround any living organism are called its environment . ECOSYSTEM – WHAT ARE ITS COMPONENTS? …
Class 12 Biology PPT Biology Presentations for Plus Two Part-1 BOTANY 1. Reproduction in organisms ▼ PPT A…
