The right and left ventricles are responsible for pumping blood while the right and left atria are responsible for receiving blood. These are the four main chambers of the heart that are responsible for transporting oxygenated blood within the body.
Just by using current knowledge of our society today, this question explains itself for the answer choice of A. Teens think that they are capable of driving even though they only had "a few drinks". This is also the case with adults, because not all adults are responsible. Hope this helped!
Natural selection only acts directly on phenotype, not genotype. It acts directly on an organisms characteristics, not its alleles. Natural selection never acts directly on genes.
All except air temperatures
DNA really is the information that everything else in the cell has to go by, which in my opinion, would be a great representation of laws as we have them in.