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Why is grasshopper harmful?
Grasshoppers are only harmful to vegetation such as plants and crops. They are not harmful to humans at all.
Why are crops destroyed if sprayed with salt water?
salt
These are sprayed on crops to protect them against pests?
Pesticides.
How can Gm crops that can be sprayed with chemicals but are not harmed?
They have been genetically modified to withstand the chemicals that are being sprayed on them.
What do pesticieds do?
They are sprayed on crops to kill any insects trying to eat them.
What are healthy crops?
The crops grwon with out the use of any fertilizer and have all the nutrition it mean to have is called healthy crop, also it is free from any pathogenic organism which may be also harmful to humans
What is the advantage of some fertilizers are sprayed over crops by helicopters?
Fertilizers are spread on fields by farmers to help their crops grow.
What is controlling crop pest?
Agricultural just means crops are sprayed for bugs.
Are lichens harmful to humans?
yes the lichens are harmful but to some humans
Is genetically modified crops are harmful or not?
not
Are mayflys harmful?
They are not harmful to humans
Is phone radiation harmful to humans?
Phone radiation can be harmful to humans. It is harmful when the person is on the phone a lot.
