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Understand the Impact of Humans on Biodiversity

In this worksheet, students will define biodiversity and explore the benefits and challenges of maintaining ecosystems and biodiversity.

Worksheet Overview

Everywhere you look, you will see different creatures sharing habitats as communities of different species.

 

This is biodiversity: when many different species live together in an environment.

 

High biodiversity means there are many different species in the same place.

 

A coral reef   

 

Low biodiversity means there are only a few types of different species, although there could be many members of one group.  

 

   Lots of angel fish in a coral reef     

 

Biodiversity is relevant not only to animals but applies to plants too!

 

Two fields - one high and one low biodiversity

 

As biodiversity decreases, ecosystems become less stable.  This is because all organisms rely on each other for the basics of survival  - food, shelter, and a thriving environment.

 

So, let's pull this all together:

 

Biodiversity

 

Human survival depends on protecting our environment - the Earth itself is a large ecosystem! We need to keep it stable so that we have enough food, shelter and a healthy environment to prevent extinction. 

 

The smallest change to one creature can affect all the other creatures around them (think about food chains) so preserving nature should be a key responsibility for humans.   

 

However, humans have already damaged the world heavily in three major ways:

 

Human impact on the environment

 

And the more habitat damage and disruption to native species there is, the more inevitable extinction seems.

 

However, there is some good news!  There are environmental initiatives in place to help protect our world. 

A good example is ecotourism, where the effect of humans visiting natural habitats is minimised. 

 

It's so important that we think about how we look after our planet!

 

Now it's time for some questions.

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