What is the main force that causes excess rainwater to run off? O A. Wind
O B. Chemical action
O C. Gravity
O D. Wave action

c

When too much rain falls onto the ground to conveniently infiltrate the soil, part of it "runs off". Gravity pulls it directly downhill. This runoff adds greatly to water levels in rivers and lakes. Occasionally, when runoff radically exceeds infiltration, it creates floods and flash floods.

Explanation:

mrk me brainlest

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.

b.have there own function.