These offspring showed variations in body shape and coloration.

the most likely explanation for these variations is what?

(a.) offspring were adapting to different environments.

(b.) parent fish had not been exposed to mutagenic agents.

(c.) offspring were produced from different combinations of genes.

C Offspring were produced from different combination of genes

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.