Which of the following is an example of an adaptation?
a. birds that live near a highway learn not to fly away every time a car passes.
b. the coloring of a monarch butterfly alerts predators to the fact that the butterfly is poisonous.
c. a dog sits when it hears a command because the owner rewards it with food.
d. pigeons make their nests near an outdoor restaurant, where food is always available.

Adaptation is spread through genes.

I would recommend the answer is B

Explanation:

apex

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.