Which principle did gregor mendel discover about traits?
a. units of genetic information that govern traits are located in cell membranes.
b. traits are passed in discrete units from parent to offspring.
c. traits exist in only one form or version.
d. traits are passed from only one parent to the offspring.

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.