Which of the following terms refers to the leading edge of a thunderstorm's cold downdraft?
A. downburst
B. gust front
C. squall line
D. dryline
Answer: B
Environmental & Atmospheric Sciences
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Calcium ions released from a muscle cell's endoplasmic reticulum allow myosin heads to
A. bind to actin. B. release actin. C. recock. D. pivot and pull on actin.
Environmental & Atmospheric Sciences
Which of the following regions has the lowest gross national income per capita?
A) North America B) South America C) Africa D) Russia E) Australia
Environmental & Atmospheric Sciences
Relative humidity is "relative" to pressure
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Which of the following compounds is used as an antacid?
A) NaHCO3 B) NaNO3 C) Na3PO4 D) Na2SO4
Environmental & Atmospheric Sciences