Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
The longest a person has survived after a heart transplant is 24 years.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
Carbon Dioxide, Trace Gases, and Climate Change
Marginal Supply - Demand Curve
Normal change in sea level
The Sun and climate change
Change in Bone Mass over Time In your early years, more bone mass is added than lost in your body