Dimethylallyl pyrophosphate serves as the starting point for the biosynthesis of numerous compunds of great importance , including cholestrol and the anti cancer drug tao. describe the first step in the reaction

Ou tof the following given choices;

a.       elimination

b.      SN2 substitution

c.       Dissociation

d.      None of the above

The answer is B. In SN2 substitution, the leaving group is attached to a primary carbon. This is one of the SN reaction of nucleophilic substitution on dimethylallyl pyrophosphate. The other SN1 reaction, which is the more probable reaction because it's more stable.

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.