A fossil of an extinct dinosaur is found, and the anatomy of the fossil shows similarities to that of a bird. What possibly explains these similarities?

A. This is purely chance and isn't significant.

B. The extinct dinosaur and modern bird share a common ancestor.

C. All dinosaurs evolved into birds and that's why there aren't any dinosaurs alive today.

D. Dinosaurs choose to fly, and evolved into birds to escape predation and capture food.

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.