Mosquito bites are not always the harmless little irritations most of us take them to be. for example, some mosquitoes carry west nile virus, and people who are infected can become very sick or even die.

Competition occurs between species when

Describe how alleles and genes are related

The hematodinium parasite becomes less of a problem for the blue crab when the crab is very young. fishing is thriving in the region. the crab moves to less salty water. a significant percentage of the population is impacted.