Which one is necessary for Hardy-Weinberg equilibrium? A. mutation

B. Natural Selection

C. random population

D. migration

I think it's c .random population

Explanation:

5 essential conditions for a population to be at Hardy-Weinberg equilibrium. These are:

1. Population must be very large.

2. There must be no immigration or emigration.

3. There must be no mutations.

4. Random mating

5. There must be no natural selection in a population.

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.