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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

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The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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The horizontal fraction bar was introduced by the Arabs.

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In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
Eating Breakfast Means More Energy and Fewer Calories throughout the Day Eating Breakfast Means More Energy and Fewer Calories throughout the Day
Regions Where Hurricanes Form Regions Where Hurricanes Form
Write in vertex form by completing the square Write in vertex form by completing the square
Ferns disperse by releasing spores that form on the underside of leaves. Ferns disperse by releasing spores that form on the underside of leaves.
Z/W inheritance of feather form in poultry is revealed by analysis of reciprocal crosses Z/W inheritance of feather form in poultry is revealed by analysis of reciprocal crosses
Video: Genetic distance between human groups

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