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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.
![Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_38_22_1981973.jpeg)
![Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_40_33_19821245.jpeg)
![The bobcat population has seen declines in the American Midwest, but is generally stable and healthy](https://biology-forums.com/gallery/47/medium_27638_22_04_12_8_48_59.jpeg)