Well too much oxygen can kill humans which is one. And 2 If the whole atmosphere was oxygen then things will burn easily.
Answer:
Explanation:
cardiovascular system is the circulatory system, it permits the circulation of blood and allows for transport of nutrients such as amino acids and electrolytes, oxygen and carbon dioxide gases, hormones, and blood cells in the body. It also helps the body to provide nourishment and fight against diseases and maintain homeostasis.
It is consider an high way because of its function. An high way allows for free passage, with often time no obstruction this is what cardiovascular system does they allow for movement of blood and essential nutrient in the body system for effective function of our body.
A deuterium nucleus consists of one proton and one neutron. The quark composition of a deuterium nucleus is
A- 2 up quarks and one down quark
B- 2 up quarks and 4 down quarks
C- 3 up quarks and 3 down quarks
D -4 up quarks and 2 down quarks
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. Thus, option "C" is correct.
<h3>What is the composition of quark?</h3>
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. The overall charge of the deuterium nucleus is +1. Comparing the given overall charge to the chart of the Particles of the Standard Model, the overall charge can be determined from the combinations of the choices.
Thus, option "C" is correct.
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Blood Provides the Body's<span> Cells with Oxygen and Removes Carbon Dioxide. Blood absorbs oxygen from air in the lungs. It </span>transports<span> the oxygen to cells </span>throughout the body<span>, and it removes waste carbon dioxide from the cells</span>
For the answer to the question above, I will just complete the missing word for your statement.
<span>Regions of the CNS with an abundance of myelinated axons constitute the "White" matter. </span>
The answer is "white"
I hope my answer helped.