Answer:
B) Valves closing
Explanation:
A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.
Answer:
Cardiovascular Endurance ⇒ Running
Running trains the cardiovascular system as it requires continuous oxygen supply to the muscles.
Muscle Strength ⇒ Lifting weights
Lifting weights builds muscle strength by as muscles get stronger from lifting heavier objects.
Muscle Endurance ⇒ Light Hand Weights
Using light hand weights such as hand grips build endurance in the muscles as they can be exercised with for longer.
Flexibility ⇒ Stretching
Stretching loosens up the joints which leads to increased flexibility.
Body Composition ⇒ Exercising Regularly
By exercising regularly, one can target all or at least most parts of the body which will lead to an improved body composition.
<span>Virtually the only fuel used by the brain, except during prolonged starvation, when these supplies are too low is glucose </span>
A foodborne illness is a disease that is transmitted to people by food.
The statement shown above is true.
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