Why are homes equipped with CO (carbon monoxide) detectors?
What will be an ideal response?
The incomplete combustion of natural gas and gasoline produces carbon monoxide. Because this gas is colorless and odorless, it may not be detected when emitted in a home heated with natural gas or from a car engine in a closed environment. Although not easily detected, carbon monoxide is quite deadly. It readily combines with the iron of hemoglobin, 200 times more so than oxygen. Death caused by carbon monoxide poisoning is actually death due to lack of oxygen in the body.
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Vasoconstriction in the gut is a likely response when an individual is
A) lying down after standing up. B) standing up after lying down. C) stressed and secreting stress hormones. D) responding to increased blood pressure. E) having an allergy attack with lots of histamine secretion.
The process whereby a cell's eventual developmental fate is set is called ________
A) notching B) embryogenisis C) differentiation D) determination
Which food components help your body build muscle mass?
What will be an ideal response?
In which model of allopatric speciation is genetic drift a larger factor and why?
What will be an ideal response?