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HOW CAN WE HAVE FARMS IN THE SEA?
Farmers grow plants and animals on their farms.Is it also possible to have a farm in the sea?
5 People in many countries grow freshwater fish from eggs.They move the small fish into lakes and rivers.The fish live and grow there.People go fishing in these lakes and rivers.They enjoy catching fish.Fish is also good food.
Now japan grows saltwater fish.Most of them are yellowtail fish.Workers grow the fish from eggs.Every time they feed the fish,they play tapes of piono music.The fish learn that piano music means food.
When the fish are small,the japanese put them in the ocean near the land.The fish find some of their own food.Wookers also feed them.They play the same piano music.The fish already know this music.They swim toward it and find the food.
In a few months the fish are large.The Japanese play the same music.The fish swim toward it and the workers catch them.
The Japanese get about 15 percent of their seafood from farms in the ocean.,

MAIN IDEA
1.The Japanese use piano music on their saltwater farms.
2.It is possible to grow freshwater fish and saltwater fish on farms.
3.The Japanese get about 15 percent of their seafood from farms.

hello to everybody,i need your ideas again, i think,this paragraph's main idea is first idea,but i'm not sure,what is this paragraph's main idea?i'm waiting for ur comment,thanks right now..

teşekkür ederim,sağolun..

HOW CAN A PLANT KÄ°LL?

People kill.Animals kill.Animals and people kill for food,or they kill their enemises.People and animals can move around and find something to kill.They can run away from an enemy.
They can kill it if it is necessary.
Many kinds of animals eat plants.The plants cannot run away from their enemies.Some plants make poison.If an animal eatts part of the plant,it gets sick or dies.
Animals learn to stay away from these plants.There are many kinds of plants that make poison.Most of them grow in the desert or in the tropics.
Today farmers use many kinds of poison on their farms.Most of these poisons come from petroleum,but petroleum is expensive.Scientists collect poisonous plants and study them.Maybe farmers can use cheap poison from plants instead of expensive poison from Petroleum.

 MAIN Ä°DEA
1.Some plants make poisons,and maybe farmers can use them.
2.Plants make poison because they cannot run away from their enemies.
3.Scientists study poisonous plants because farmers want to use them.

Yukarıdaki parağrafın anafikri üç şıktan birisi olacak.Pragrafı anladım.Fakat hangi şıkkın anafikir olduğuna karar veremedim.Yardımlarınızı bekliyorum.