<em>This activity is an aerobic activity. This is known as aerobic because this consists of cardio exercises. During these activities, the heart rate and breathing rate will increase. These require free oxygen for a longer time.</em>
Answer:
Hypothalamus maintain our internal body temperature.
Explanation:
Our internal body temperature is regulated by a part of our brain called the hypothalamus. The hypothalamus checks our current temperature and compares it with the normal temperature of about 37°C. If our temperature is too low, the hypothalamus makes sure that the body generates and maintains heat.
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Answer:
True
Explanation:
Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
