Persistent chlorinated hydrocarbon pesticides persist in the environment and accumulate in the foods chain causing harmful effects on the environment including posing a threat to humans health in the long term. Nonpersistent organophosphate pesticides are more toxic than the former but degrade after a short life span. Therefore they cause immediate harm in case one is in contact with them.
The fact that they do not accumulate in the environment, they are more favourable than chlorinated hydrocarbon pesticides. Chlorinated hydrocarbon pesticides will affect several generations due to their accumulation in the environment. However they don't need to be re-applied hence are less expensive
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Treating a sick mango for fungal diseases involves using a fungicide. All susceptible parts of the tree should be thoroughly coated with the fungicide before infection occurs. If applied when the tree is already infected, the fungicide will have no effect. Fungicide sprays need to be reapplied on new growth.
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I hope u meant for this answer...
Explanation:
plants > herbivorous insects > predaceous insects > toads.
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<h3>MEE TOO I DONT UNDERSTAND THIS QUESTION!☡</h3>
Answer:
i think it is friction bcs gravity helps an abject move and friction causes it to slow down
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