Which of the following is the most cost effective source of energy?

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?