1. SEA
🐋What is known as “Sea”?
* A water that covers more than 70% of the Earth’s
surface is known as sea.
2. Beginning of the sea
* At the beginning of the origin of the Earth , there was extreme heat
on the Earth , due to this extreme heat , the water on the Earth
evaporated,condensed and clouds were formed.
* The clouds joined together and dropped on to the Earth.
* There had been continuous heavy rains on the Earth for many years.
This rain water wich was rich with minerals , collected in lower lands
and seas were formed.
3. There are soo many seas in the word.
These are some of them.
- Dead sea
- Yellow sea
- Caribbean
sea
- Caspian sea
- Arabian sea
7. Sea creatures
* There is a large amount of sea creatures in the sea and the first creature in this world was origin in
the sea.
🐧 Fish species in the sea
Blue whale
Dolphin
Shark
Shed
Apart from this , there are many of ornamental fish in the sea.
🐧 Amphibians in the sea
Tortoise
Kesbewa
13. How do we pollute the sea
* Garbage accumulation in the sea causes sea pollution.
* Oil seepage in to the sea causes waste containing dangerous toxins.
* Eutrophication
This process frequently occurse in coastal waters due to lackof
oxygen dissolved in the water.
14. How can we control the sea pollution
- Reduce polltants
- Use less energy
- Avoid dumping waste in to water sources
