Wastewater renovation relies on what processes to purify water?
A) advanced treatment with carbon filters
B) well-designed septic systems
C) natural purification in the soil
D) anaerobic degradation in the groundwater
C
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Features of hominins, such as large brain size and bipedalism, developed in response to ____
a. improved ability to hunt b. cooling climate c. increased predation d. warming climate e. an expanding habitat
One of the major factors in the acceleration of the exploitation of Earth's resources was the increase in economic activity per person
Indicate whether the statement is true or false
Comets typically orbit the sun at the distance of Neptune
Indicate whether the statement is true or false
_____ currents flow equatorward and are shallow and broad
a. Polar b. Counter c. Western boundary d. Eastern boundary e. Transverse