Humans and blue whales have many shared structures. Based on this information, paleontologists know that these species descended from a common ancestor population that also had those body structures. 1.What are the descendants in this diagram?

2.What body structures did the common ancestor have?

1. The descendants are Blue whales, and Humans

2. Back bone Lungs , radius and ulna (front limb bones), structures for producing milk

Explanation: It points to the descendants of common ancestors to blue whales and humans, If not please tell me more clearly what you meant by descendants.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

multiplying and dividing the two decimals and the eqations by the same number of the overalls