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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Size comparison of Earth and Uranus Size comparison of Earth and Uranus
Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
Ecological sensitivity to climate change Ecological sensitivity to climate change
Ice cores: Periods of rapid climate change especially in North Atlantic Ice cores: Periods of rapid climate change especially in North Atlantic
4 ways your breasts change after pregnancy "4 تغيّرات تطرأ على ثدييكِ ... 4 ways your breasts change after pregnancy "4 تغيّرات تطرأ على ثدييكِ ...
Distribution Patterns and Population Size Estimates (Bio 30) Distribution Patterns and Population Size Estimates (Bio 30)
Video: Ciliate conjugation Animation

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