(N/A) Ecology at the organismic level is essentially physiological ecology,which studies how different organisms are adapted to their environments in terms of survival and reproduction.
Regional and local variations within each biome lead to the formation of a wide variety of habitats. The major biomes of India are represented in the figure.
Life on Earth is not limited to just a few favorable habitats but also exists in extreme and harsh environments,such as the scorching Rajasthan desert,the perpetually rain-soaked forests of Meghalaya,deep ocean trenches,torrential streams,permafrost polar regions,high mountain tops,boiling thermal springs,and stinking compost pits.
Even our own intestines are a unique habitat for hundreds of species of microbes.