#biology #humansandfoodchains

• Humans clear land to grow crops. This destroys habitats and harms food chains.

• Some wild animals can live in the crops that farmers grow .

• Fishing and the introduction of new species can harm food chains.

Fishing

When we take fish from the sea , we are taking away food that another animal could eat. If we take too many fish , then there may not be enough food for

there animals , and they may die out.

For example , numbers of puffins in some parts of Scotland have decreased . Puffins eat fish called sand eels . Humans catch a lot of sand eels. Perhaps the puffins cannot find enough food .

Biology , chapter :3.3 pg no:42