A viral killer that damages the liver and kills about 600,000 people each year is ____________________
Fill in the blanks with correct word
hepatitis B
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The form of nitrogen that comprises 78% of atmospheric mass and is necessary for biological processes, but is unusable by plants, is
A) N2. B) NOx. C) N2O. D) NO2.
A subsidence inversion develops when:
A) the mixing layer gets deeper. B) the air at the top of the mixing layer gets much colder. C) warming, subsiding air of an anticyclone traps the turbulent zone near the ground. D) air near the ground chills rapidly as radiation is emitted during the night.
Where are the largest magnitude earthquakes most common?
A. at mid-ocean ridges B. at subduction zones C. at transform boundaries
In seismology, wave ________ is the height of the wave above a starting point.
A. frequency B. wave length C. period D. amplitude