Sulfur oxides and nitrogen oxides form from the burning of fossil fuels for energy. these gases combine with water in the atmosphere and can form acid precipitation. organisms living in affected aquatic environments often suffer decreased cell function due to
a) decreased ph levels.
b) increased ph levels.
c) decreased temperatures.
d) increased temperatures.

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.