Identify the fresh water ecosystem.

Producers are________

It is a biodegradable waste.

It is an undesirable change that occurs in air and water.

Usage of chemical pesticides and fertilisers causes ________ pollution.

Primary consumers that eat plants are called _________.

Temperature, light and wind are ________ factors.

__________ is the process of converting waste materials into new materials.

Water pollution can spread __________diseases in man.

The 3R’s are Reduce, __________ and Recycle.

Define ecosystem.

Write any two things that can be recycled.

What are the types of pollution.

Give one example of a food chain in an aquatic ecosystem?

What are pollutants?

Give two examples of how you can avoid or reduce waste?

Write a short note on noise pollution.

The Pacifi c ocean is an example of an marine ecosystem.

Bacteria and fungi are called decomposers.

Human and animal wastes are examples of non-biodegradable waste.

Excessive use of pesticides leads to air pollution.

In schools, waste management rules say that we should separate waste in two categories.

What is biodegradable waste?

How can we reduce water pollution?

Write the importance of the food chain.

What would happen if an organism is removed from the food chain?

Explain the link between waste and dangerous diseases like dengue and malaria?