Frozen water (ice) has less density than liquid water.
how does this property of water affect life on earth?
a. ice floats on the surface, sustaining life at the bottom of lakes and oceans.
b. ice floats on the surface, animals migrate over lakes and bays.
c. ice floats on the surface, maintaining sub–zero temperatures at the bottom of lakes and oceans.

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.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.