Answer:
The answer is A, C, D, E
Explanation:
Just took the quiz on USATestPrep.
Answer:Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur.
Explanation:
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Yes! a hypothesis bus very valuable even if its wrong, because this way, you can compare how off you are from your hypothesis to your conclusion
False. The right side of the heart pumps oxygen-poor blood to the lungs to be re-oxygenated. For this reason, the right side of the heart is considered the pulmonary circuit pump. The left side of the heart pumps blood to the body, and is therefore considered the systemic circuit pump. ;)
