Answer: HSV-1 is the virus that causes cold sores around the mouth. It can cause genital herpes when it spreads through oral sex. But most of the time, genital herpes is caused by HSV-2.
Explanation:...
Answer:
Continents looked like they fit together.
Explanation:
The continents as we know them today have formed, millions of years ago, a single continent called pangeia. The first person to propose this theory was Alfred Wegener, a German meteorologist who realized that the continents had very similar contours, which apparently fit together even thousands of miles apart.
The three different types of epidemiological nutrition studies: cross-sectional, case-control, and prospective cohort studies. The three basic types of nutrition research are randomized, animal and laboratory studies, and cohort studies.
Cross-sectional studies are used primarily to determine the prevalence of a problem, while cohort studies involve the study of a population that is both exposed and unexposed to the cause of the disease. Case control studies are used to study 2 groups of cases (diseased) and controls (non-diseased) and to identify risk factors between them. Randomized trials, researchers actually intervene to see how a particular behavior change or treatment, for example, will affect a health outcome. Animal and laboratory studies are studies carried out in laboratories on cells, tissues or animals. Laboratories provide tightly controlled conditions that have a broad impact on human health.
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