Answer:
well first don't look down 2nd have a great day I'm not much of a therapist but when life gives you lemons you make lemonade
Hey the answer is A!
hope i helped!! :)))
Some uncontrollable risk factors for disease is genetics and exposure.
The second statement best explains the type of blood vessel and the function of these vessels' valves - <span>These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
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Veins are large blood vessels which carry blood back to the heart. <span>Veins have a system of valves to prevent back-flow.</span>
Answer: The statement above is absolutely true.
Explanation: During our sleep we pass through five stages of sleep. 5th stage of the sleep is of great importance and is known as REM sleep aka rapid eye movement sleep. During this stage heart rate, breathing and eye movement increases. According to the researchers of Neuro-scientists Rem sleep helps the brain rewire itself and integrates new memories and train the mind for important tasks to be done next day.
