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Author Question: Which of these is not a disadvantage of the bisecting technique? (Read 22 times) |
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.