LIFE SCIENCE

Detailed explanation-1: -Plants take up nitrogen compounds through their roots. Animals obtain these compounds when they eat the plants. When plants and animals die or when animals excrete wastes, the nitrogen compounds in the organic matter re-enter the soil where they are broken down by microorganisms, known as decomposers.

Detailed explanation-2: -Nitrogen is needed both by Plants and Animals because it is the major constituent of proteins, vitamins, hormones, etc. Nitrogen is a crucially important component of life. It is an abundant element present in the atmosphere.

Detailed explanation-3: -Where do living beings get the nitrogen they need? Animals get it by eating plants or other animals, whether it’s worms eating cellulose, elephants eating tree leaves or tigers eating an elephant. After eating, they shed the nitrogen in bodily waste.