This would be D) The atmosphere :P
Answer:
B. Graduated cylinder
Explanation: Liquid volume cannot be measure by a scale or ruler and volume in science is measured typically by Graduated cylinder.
Answer:
While humans, as well as other vertebrates, have a closed blood circulatory system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open circulatory system containing a heart but limited blood vessels.
Explanation:
The answer is b. hope this helps
