Approximately ____ million people are now
infected with HIV.
a. 1
b. 6
c. 12
d. 20
e. 30
E
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A C. elegans with a heterochronic mutation in lin-14 will lay eggs normally
Indicate whether the statement is true or false
Much of the world's coal reserves were formed from the buried remains of the dominant plants of the Carboniferous period. What were the dominant plants of the period?
a. gymnosperms and angiosperms b. angiosperms only c. gymnosperms only d. seedless vascular plants
Why are homes equipped with CO (carbon monoxide) detectors?
What will be an ideal response?
Many polychaetes are euryhaline meaning that they
a. Can tolerate a wide range of salinity b. Must live in marine conditions c. Possess both male and female reproductive organs d. Always live in tubes e. Lack any circulatory system