Answer:
A healthy artery is wider and has no blockages. The lumen (which is the hole in the centre of the artery), is open and clear. This means there is more blood flow. An artery of a person suffering from coronary heart disease is often blocked, usually by a fatty deposit. This means the blood does not flow as well. (See diagram, in which I would draw two arteries, one with a blockage of fatty deposit, one clear and healthy).
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1.
a. deoxyribose sugar, phosphate, and nitrogen-containing base
b. deoxyribose sugar
c. cytosine
d. adenine, thymine, guanine. and cytosine
Ashley Williams is an American film, television, and theater actress. Ashley Williams didn't perform any thyroid surgery. She only tweeted about what thyroid surgery is last 9 of January 2012. However, she broke her silence about her miscarriage and how she discovered it during an outing.
Answer: Option A) Oxygen may not have been able to accumulate in the atmosphere
Explanation:
Ozone, O3, is an allotrope of oxygen having three atoms in the molecule instead of the usual two present in molecular oxygen. Ozone is generated from oxygen, and is the only form in which oxygen can exist in the atmosphere.
