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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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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.

EEG recordings showing the differences between normal, absence seizure, and generalized tonic–clonic EEG recordings showing the differences between normal, absence seizure, and generalized tonic–clonic
Four Possibilities in Judging the Presence or Absence of a Stimulus Four Possibilities in Judging the Presence or Absence of a Stimulus
Predators adapt to extreme water pressure and the absence of light Predators adapt to extreme water pressure and the absence of light
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ... If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...
The response of the lac operon in the absence of lactose The response of the lac operon in the absence of lactose
Video: Hormonal regulation of pregnancy - weeks 2 through 38

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