Why does sound travel rapidly though the lower well-mixed surface layer?

a. Temperature and pressure are homogeneous.
b. Temperature and salinity are homogeneous.
c. High refraction areas are produced.
d. Density is heterogeneous.
e. Shadow zones are produced


b

Environmental & Atmospheric Sciences

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Scientific theories are capable of generating testing predictions

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

World cities are most closely integrated into the global economic system because they

A) are at the center of the flow of information and capital. B) control the flow of labor and technology. C) contribute money to local, regional and national candidates for elective officers. D) are at the heart of the supply chain and make sure goods move freely. E) are integral to the functioning of democracy.

Environmental & Atmospheric Sciences

Large, stable communities of plants and animals whose boundaries are closely linked to climate and soils are called

A) biozones. B) ecospheres. C) biogeographic realms. D) life zones. E) biomes.

Environmental & Atmospheric Sciences

Calculate the power requirement in horsepower for an escalator in a mall that transports 50 people with an average of weight of 170 lbf (756 N) a vertical distance of 30 feet (9.1 m) in 25 seconds.

What will be an ideal response?

Environmental & Atmospheric Sciences