The incidence of tuberculosis (TB) is increasing because:
a. Strains of the TB bacterium have developed resistance to antibiotics.
b. Population size and air travel have increased.
c. Immune systems have weakened from the spread of AIDS.
d. There is a lack of TB screening, especially in developing countries.
e. All of these answers.
E
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How does the ocean change with increasing depth?
A) It gets darker, warmer, and contains more organisms. B) It gets darker and warmer, pressure decreases and it contains more organisms. C) It gets darker and colder, pressure increases and it contains fewer organisms. D) It doesn't change in a consistent way.
Physical geography's major function is to study and learn about:
a. human activity and the results thereof.
b. Earth's environments and the processes that influence them.
c. the physical and human features of a region.
d. the composition of Earth's crust.
Large terrestrial regions with similar characteristics are
a. ecosystems b. communities c. populations d. habitats e. biomes
Which of the following is true regarding the amount of water in rivers, streams, and the atmosphere?
A) They contain 0.033 percent of the world's fresh water supply. B) Combined, they contain the majority of the world's freshwater. C) The amount of the world's fresh water in rivers and streams is greater than that in the atmosphere. D) They contain 11.02% of the world's fresh water supplies.