What did chargaff discover while studying bases in the dna of organisms?
the bases in the dna of each organism were unique.
the ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
the overall percentages of bases were different from one organism to the next.
there were equal amounts of all four bases in every organism, or 25 percent of each base.

Explanation:

B

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 function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation: