Human activities are causing big changes to our natural habitats. These changes are upsetting the balance of food webs, which is how different plants and animals depend on each other for food. Here are some of the main reasons this is happening:

1. Deforestation:

   • Every year, about 13 million hectares of forests are cut down. This destroys homes for many animals and plants.
   • Forests are really important because over 80% of the world’s variety of life is found in them.

2. Pollution:

   • When too many nutrients wash into water from farms and cities, it causes large growths of algae. These algae absorb oxygen, which is bad for fish and other water creatures.
   • Each year, around 300 million tonnes of plastic are made. This plastic pollution hurts ocean animals.

3. Climate Change:

   • Since the start of the industrial age, the earth's temperature has gone up by 1.1°C. This change makes animals and plants move to different places.
   • Coral reefs are very important for ocean life, but with a temperature rise of just 1.5°C, we could lose 70-90% of them.

All of these issues together harm our planet’s biodiversity and balance in nature.