Major Ecosystems or Biomes

A large and natural ecosystem which has its peculiar climatic condition and specific flora and fauna is called a biome. Biomes are therefore large ecosystems. Biomes may be terrestrial and aquatic. Both these types have completely different characteristics.

What is Nitrogen Cycle

Nitrogen is a very important and essential element for plants. We know that nitrogen is the most abundant gas in the air. Air contains 78% nitrogen. However it can not be used by plants directly similar to oxygen and carbon dioxide. This is because.