Biodiversity refers to the variety of living things found in different environments like mountains, water, and as microorganisms. Scientists have studied this variety over long periods. The environment consists of interconnected living and nonliving things like sunlight, air, water, soil, plants, and animals. There are many food chains in nature, with producers like plants using sunlight to make food, which is then eaten by herbivores, and subsequently carnivores, with each organism fulfilling a link. Multiple overlapping food chains make up a food web. Plants play a key role in nature by using sunlight, water and air to produce food that animals then eat. Decomposition of plant and animal residues by microorganisms returns nutrients to the soil

1. Environmental balance

2. Biodiversity

Variety of living things.

Obervations in different seasons

Liring things that are found on mountain, in water,
microorganisms.

Scientists studied the variety over a long period.

3. Environment

Sunlight,air,water,soil,plants and animals are
included

Many components in the surroundings

Living nonliving things dependent on each other

Study of interaction between them.

4. Food
Chain

Several links in a chain

If any link is loose chain brakes

Sunlight – plants –food-worm eats-grasshopper eats
worm-birds-eats grasshoppers

For food all living things are dependent on each
other

Each component of food chain is a link

5. Food Web

One living thing can be a part of a number of food
chain

This gives rise to food web in nature

6. Plants – infortant food

Living things gets food from environment,nature

With help of water,air and in presence of sunlight
plants make food

Plants are eaten by the animals

Animals eat Food Sunlight
Air
Water

7. Enviromental
balance

Micro organisms helps the process of
decomposition of plant resideue dead animals

Helps the growth of plants to make food

Again plant residuce animal dead which gets
decomposed in soil

Important cycle in environment.