MRSA is a kind of staph that can't be killed by antibiotics.
I love questions like this! Science is so cool! So, strangely enough, a vaccine is a very weak bacteria. If the bacteria was strong, your immune system couldn't defend. Because its a weak cell, your immune cells can fight it. Did you know that you have a special cell inside you? This cell remembers every bacteria that comes to your body. Because you had very weak, damaged bacteria in you, (measles bacteria), you can remember it, and grow strong against it. Then, when germs try to enter your body, your immune system is right there to defend it. Everytime the bacteria of Measles tries to enter, your immune system is extra strong because it remembers it. Isn't that cool?
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From one Smartie to Another - BubbleSmartie11
A) Genetic drift is the random increase or decrease of genes in a population. Natural selection is not random.
Genetic drift is the change in the frequencies of alleles in a population due to chance events (random survival). Genetic drift exhibits strong effects in small populations and plays a smaller role the larger the population gets. Natural selection is the non-random change in the frequency of alleles in a population over time, because the change in frequency of the alleles is dictated by the different relative fitnesses that different alleles confer.
Smoking, sitting too long, ......................... are examples of RISK FACTORS that offset the wellness benefits of fitness program.
Fitness program has many benefits that improve one's health status, but these benefits may be hindered from manifesting if one is indulging in some habits or eating some kind of foods that are not beneficial to one's health. Such unhealthy habits and foods are termed risk factors. And these risks factors may increase the probability of one having some types of diseases in the future. <span />
Answer:
C
Explanation:
The denominator should be n to represent the total no. of data sets