Our Environment Notes

INTRODUCTION

•      Everything that surrounds us forms our environment.

•      The environment can be natural or man-made.

•      The Earth has been around for 4.6 billion years.

•      Over the years, human activities have made changes in the environment of the Earth.

•      We have destroyed most of the Earth’s forest.

•      Every day, 50 to 100 species of plants and animals become extinct as their habitat and human activities destroy them.

•      Much of the destruction of the Earth, its plants and animals could be decreased if people all over the world would Reduce, Reuse, and Recycle.

•      So, we need to protect the environment.

POLLUTION

•      The harmful change made in the environment due to human activities is called pollution.

•      There are mainly four types of pollution.

•      They are air pollution, water pollution, land pollution, and noise pollution.

TYPES OF POLLUTION

Air Pollution:

Source:

•      Smoke produced from industries, factories, vehicles, burning of garbage, etc.

Other examples are: A cloud of smoke from the exhaust of a bus, car, or a scooter; smoke billowing from a factory chimney, speeding cars cause dust to rise from the roads.

•      Natural phenomena such as the eruption of a volcano cause air pollution.

•      Someone smoking a cigarette can also cause air pollution.

Disease Caused: