Which of the following make HIV such a deadly and persistent virus?
A) It attacks helper T cells.
B) It is slow acting.
C) both a and b
D) neither a nor b
C
Environmental & Atmospheric Sciences
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True or False: All major rock forming minerals are silicates
Indicate whether this statement is true or false.
Environmental & Atmospheric Sciences
Which feature is typically found along Atlantic-type passive margins?
A) ?subsiding coast B) ?jagged rocky headland C) ?marine terrace D) ?plate boundary
Environmental & Atmospheric Sciences
What type of cancer in children has now been found to be associated with Chernobyl?
A. breast B. thyroid C. prostate D. lung
Environmental & Atmospheric Sciences
Which direction was the ice flowing (Hint: It is bedrock.)
A) Bottom to top B) Left to right C) Top to bottom D) Right to left
Environmental & Atmospheric Sciences