West nile virus was identified in the western hemisphere during the summer of 1999 and was associated with human, equine, and avian deaths. this virus is acquired by

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

In a cladogram' when does a group of organisms branch off

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease