How humans affect nature
Humans are part of the ecosystem, and our actions can upset its balance. Activities such as cutting down forests, polluting rivers and over-hunting reduce biodiversity and destroy habitats. When one species disappears, other organisms that depend on it are also affected.
Harmful human activities
- Deforestation — clearing forests removes homes for wildlife.
- Pollution — waste in air, water and soil harms living things.
- Overfishing and over-hunting — taking too many animals reduces their numbers.
Key idea
A balanced nature means the numbers of producers, consumers and decomposers stay steady over time. Human activity should not remove more than nature can replace.
Protecting the environment
People can also help keep nature in balance by acting responsibly.
- Reduce, reuse and recycle to cut down waste.
- Replant trees and protect forests.
- Set up wildlife reserves and national parks.
Example
A wildlife reserve protects endangered animals like the Malayan tiger by giving them a safe habitat where hunting is not allowed.
Remember
- Humans can both harm and protect nature.
- Deforestation and pollution reduce biodiversity.
- Recycling and reserves help keep nature balanced.