Deforestation happens when humans destroy natural forests. Thousands of years ago, much of the land on Earth was covered in trees. Over time, humans have reduced the size of these forests. People cut down forests for several reasons. One of the main reasons is to clear the land for agriculture (farming). Another is to harvest the trees themselves for their valuable wood. One of the main problems with deforestation is that it destroys habitats. Many different types of animal live in a forest habitat because it provides them with food, water and shelter. When the forest is destroyed, the animals might not be able to survive in a new environment. This can cause them to become extinct.

Another negative effect of deforestation is soil erosion. The roots of trees hold the soil together and keep it moist. Without the trees, the soil dries out and is easily eroded (worn away) by weather. Because of the negative effects of deforestation, many countries have created laws that make it illegal. However, much illegal deforestation still happens. Some countries have tried to plant more trees to restore the forests, but this can take many years. Activity

Look at the writing frame on the following page. Use the information on this page, plus any additional research, to create an information text on

deforestation. Try to answer the questions in your own words.

Deforestation is when humans destroy forests.

One reason for deforestation is to obtain wood.

Learning Objective

I can explain the reasons for deforestation and its negative effects.

National Curriculum Statutory Requirements

4A3 - recognise that environments can change and that this can sometimes pose dangers to living things The effects of deforestation

Teacher: Me:

Outstanding Science Year 4 - Living things and their habitats - OS4A008

© Minerva Education 2016 | OS4A008 - The effects of deforestation p1 | www.outstandingscience.co.uk

It can take many years to restore a forest.

What is deforestation?

Why do people destroy

forests?

How does deforestation affect living things?

How does deforestation cause soil erosion?

How can deforestation be prevented?

© Minerva Education 2016 | OS4A008 - The effects of deforestation p2 | www.outstandingscience.co.uk