Hey there!
Number 3, "has more people than ever before" is correct. As there are more people, there is a greater need more resources.
Hope this helped, have a good night!
Answer:
Explanation:
It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart. The left pump sends the newly oxygenated blood around the body.
The correct answer is D(<span>Neck, armpit, and groin). I took the test and know from personal experience.
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