Speaking of HIV, an important piece of information in the management of a person infected with HIV is his/her viral “load.” How could PCR give information about the amount of viral particles (viral replication) in a specific person?

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.

fossils prove the small changes in structure.

landscaper → environmental engineer → nursery manager → veterinarian-b.