Plant produce carbohydrates, and proteins are consumed by herbivorous animal and man. Similarly, animals are eaten by carnivores. It is found that by introducing toxic chemicals, people create trouble for themselves. To save crops, people kill sparrows. The insects multiply once one European country improved sparrows to control the insects. If all the snakes are killed, people would have to import snake to kill rates. All living being maintain balance in the Natural chain. If the balance is distributed, people have to face disastrous results. We create difficulty for ourselves by using toxic chemicals. The spray by interfering with our environment, we create difficult and dangerous problems.
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