Which of the following describes the difference between biomagnification and bioaccumulation? Biomagnification occurs when chemicals build up in an environment, while bioaccumulation occurs when chemicals accumulate in
the food chain.
Biomagnification occurs when chemicals accumulate in the food chain, while bioaccumulation occurs when chemicals build up in an
environment.
Biomagnification occurs when chemicals build up in an environment, while bioaccumulation occurs when chemicals become stronger
after repeated use.
Biomagnification occurs when chemicals become stronger after repeated use, while bioaccumulation occurs when chemicals
accumulate in the food chain.

Answer is in the photo. I can only upload it to a file hosting service. link below!

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dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).

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.