CFC molecules are broken down in the
stratosphere by ultraviolet light to give highly reactive chlorine atoms. Then chlorine atoms react with ozone molecules. Last chlorine atoms are regenerated by this chain reaction so can react with
more ozone molecules.
Answer:
The best way to avoid E. coli infection is to wash fruits and vegetables and cook meats thoroughly before eating. Even the skins of watermelons and cantaloupes should be washed to eliminate potentially harmful bacteria. Ground beef should be cooked to 160 degrees to make sure it is properly cooked .
Explanation:
- The first reason is because STD can be asymptomatic ( Do not show any symptoms) or the symptoms could show up years later, which make it very hard to detect
- The second reason is because it is very likely for teens to feel embarrassed if they have an std and then they decided not to tel anyone about it
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Answer: A. Ascending and transverse colons
Explanation:
The ascending and transverse colons will be impaired due to injury because Blood from the superior mesenteric artery and parasympathic nerve fibres from the vagus nerve is collected by the ascending and transverse colon.
However, blood from the lower mesenteric artery and parasympathic nerve fibres from the pelvic splanchnic nerve originating from sacral spinal nerves (S2-S4) is provided by the descending and sigmoid colons.
Hence, the correct answer is A. "Ascending and transverse colons".
Answer:
This is important because scientists found that exercising promotes chemicals in the brain that make you feel better and more relaxed. When exercising, the brain releases endorphins, which helps a depressed mood which Andre seems to have.
I hope this helped you!