Ryan made a list of activities that are scientific and activities that are not scientific. Which activity should Ryan classify as not scientific?

A. sorting rocks by color and size

B. climbing to the top of a very tall mountain

C. measuring the height of a plant every day

D. making notes about how many hours the sun shines each day

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.

i think the answer would d

c. heat from the poles back down towards the equator.