Lower temperatures lead to slower soil formation.

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.

not sure if this is what you'r looking for eubacteria and archaebacteria

i think that you are smart and you should fit for it out

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate