Farmers of sodium cyanide
In ancient times, there were farmers who suffered from insects and abused crops, and they had no good plan. Occasionally, I heard a medicine, the agent of sodium cyanide, which was very effective and could control all insects.

Farmers were suspicious at first, but the damage to the crops was getting worse, so they decided to use it. The agent of sodium cyanide is applied to the field according to the recipe. After a while, the insects gradually decreased, and the crops began to grow, and the leaves gradually grew green and the stems gradually rose. Farmers were happy, thinking they had won a treasure.

However, not long ago, the livestock of the neighbor ate the leftover medicine in the field by mistake, and died. I also heard the water of the well spring, which was also contaminated with medicine and poison, and people Farmers began to fear, knowing that although this medicine is effective in killing insects, its toxicity is fierce, harming humans and animals, and harming water sources.

Then he introspected himself, and should not only seek to exterminate insects, but ignore other harm. After abandoning the agent of sodium cyanide, he turned to gentle methods, such as attracting birds and insects, and treating damage with bacteria. Although there are still insects in the field, the ecology is gradually recovering, people and animals are safe, and crops are harvested every year.

This is the agent of sodium cyanide used by farmers, and then he realized the importance of ecological balance.