Trees should be planted on both sides of the road why​

 When planting trees along the road it will absorb and clean water that runs over the road. There by it can reduce the chance of flood and soil erosion. And also helps to improve cleaner water supply. And an important benefit is these trees can provide reliefs to humans, birds and animals from sun and rain.

Explanation:  When planting trees along the road it will absorb and clean water that runs over the road. There by it can reduce the chance of flood and soil erosion. And also helps to improve cleaner water supply. And an important benefit is these trees can provide reliefs to humans, birds and animals from sun and rain.

When planting trees along the road it will absorb and clean water that runs over the road. it can reduce the chance of flood and soil erosion

the answer is c a tornado

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.