BÀI : NATURAL RESOURCES OF THE EARTH- NGUỒN TÀI NGUYÊN THIÊN NHIÊN CỦA TRÁI ĐẤT.

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Natural resources of the earth.

What  our natural resources .

Natural resources are things in nature.

 We  need them every day.

We  need air to breathe.

 We  need water to drink.

We  need plants to eat.

We  need soil to grow plants .

Some  natural resources are the sunlight.

 Air  and water.

Soil  and rocks.

Plants  and animals.

Coal  and oil.

Natural  resources are found all over the earth.

 Some  are found under the Earth's surface.

 How  do we use these natural resources .

All  plants and animals use oxygen from air to breathe .

Plants use sunlight water from soil and carbon dioxide from air to make their own food.

We  eat these plants their fruits and vegetables.

We  make use of wood obtained from plants to make different things like desks, chairs, wardrobes etc.

 We  also obtain paper from plants .

We  use rocks and minerals to make metals pottery and glass.

Coal is a source of energy which powers and heats our homes.

There  are so many other ways in which natural resources can be used.

 We 'll these natural resources last forever. 

 Let us find out some of these natural resources are renewable.

 The  word renewable means being replaced from time to time .

So  these resources will be around for a long time and we can use them again and again.

Nature  keeps making these natural resources more and more.

For  example, the sunlight will be here.

For  many years, water can be used many times as it gets recycled.

Nature makes more rocks.

 Rocks  break down and to make more soil. 

More  wind is also made by nature. 

Plants  and animals also produce more of their own kind . 

All  these resources are called renewable.  

So  renewable resources are those natural resources which are being replaced in nature over time. 

But  some resources take a very long time to make . 

We  have to be more careful with these. 

Coal  and oil were created from plants and animals that lived very long ago.   

They  died and were buried under the earth . 

After  millions of years they became coal and oil. 
Because  we can't make more of them we may run out of them.

Such  resources are called non-renewable.

 So  non-renewable resources are those resources which take time to be replaced. 

It  is very important to conserve these that means to take care of them and not waste them.

 We  can use other sources of energy.

 We  can use energy made from renewable resources.

 We  can use the sunlight the wind and water.

We  can use energy from plants.

We  can also use energy from the ground.

Let  us now summarize what we have learned.

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