<em>Your answer is:</em>
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B. Being at least 15 percent underweight.
Hope this helps C:
Answer:
During combustion or burning, carbon from fossil fuels combine with oxygen in the air to form carbon dioxide and water vapor. These natural hydrocarbon fuels come from once-living organisms and are made from carbon and hydrogen, which release carbon dioxide and water when they burn.
D. The optimal amount of physical activity needed to maintain weight is unclear.
<span>It is during the stage where rapid eye movement begins in sleep
where dreams begin. During this period, as brain activity increases so does their
respiration rate. Even though the brain
and other systems are lively, the muscles continue to be calm. This happens for around fifteen to twenty
minutes.</span>
negative effects- emotional stress that stays around for weeks or months can weaken the immune system and cause high blood pressure, fatigue, depression, anxiety and even heart disease. In particular, too much epinephrine can be harmful to your heart. It can change the arteries and how their cells are able to regenerate.
positive effects- Stress is key for survival, but too much stress can be detrimental. Emotional stress that stays around for weeks or months can weaken the immune system and cause high blood pressure, fatigue, depression, anxiety and even heart disease. In particular, too much epinephrine can be harmful to your heart.
