Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. ... Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
AIDS which results from HIV infections, results from the inability to fight off infections not the viruses direct attack on the immune system. This means other diseases as small as an Upper Respiratory Tract infection (a cold) or the flu, can hit much harder and are more lethal.
D. In all of the answers you endure muscle use.
The answer is: D - the area between memory impairment and excellence.
Answer:
The United States puts more people behind bars than any other country, five times as many per capital compared with Britain or Spain.
Explanation:
It wasn't always like this. Half a century ago, relatively few people were locked up, and those inmates generally served short sentences. But 40 years ago, New York passed strict sentencing guidelines known as the "Rockefeller drug laws" — after their champion, Gov. Nelson Rockefeller — that put even low-level criminals behind bars for decades. Those tough-on-crime policies became the new normal across the country. But a new debate is under way over the effectiveness of tough sentencing laws.
