Which lung disease may spread to the eyes causing permanent blindness?
a. tuberculosis
b. influenza
c. viral pneumonia
d. histoplasmosis
e. pertusis
D
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The _____________ bacterial group contains organisms that normally inhabit the intestinal tracts of humans (depending on diet), and can additionally break down cellulose
A. Bacteroidetes B. Firmicutes C. Heliobacteria D. Gram-positive E. Proteobacteria
Approximately how long would it take for CO2 levels to return to nineteenth century levels if we cut emissions by 90% immediately?
A. hundreds or thousands of years B. 1 month C. 6–12 months D. 10 years E. 100 years
The most inclusive group in taxonomy is a:
A. domain B. kingdom C. population D. species
About 99 percent of the UV radiation that the sun showers on Earth is blocked by:
A) the magnetic fields that surround the Earth. B) stratospheric ozone. C) ground level ozone. D) stratospheric greenhouse gases, such as CO2 and water. E) tropospheric greenhouse gases, such as CO2 and water.