Temperature affects plant germination and ___________________ _.
Only about seven percent of the earths surface is suitable for _____.
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Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
On average, the stomach produces 2 L of hydrochloric acid per day.
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