The diagram shows a roller-coaster track. Assume that the system is closed. At point E, the roller-coaster has just exit the vertical loop. which chart best shows the relative amounts of potential and kinetic energy of a roller-coaster car at point E?
A.
B.
C.
D.

What are the characteristics of living things

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim