Although scientists think the actual number is considerably higher, there are at least ________ known species of plants and animals on Earth
A) 1,500
B) 15,000
C) 15,000,000
D) 1,500,000
Answer: D
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The increasingly rapid movement of information and goods around the globe is known as
A) time-space compression. B) diffusion. C) transportation enhancement. D) transportation efficiency.
In areas where climate makes growing wet rice difficult, the major grain is
A) corn. B) oats. C) wheat. D) sorghum.
Conservation is
A) the sustainable use and management of natural resources. B) maintenance of resources in their present condition. C) invention and diffusion of new agricultural practices. D) breeding programs to rebuild endangered species. E) maintaining wild environments.
The best modern technique for obtaining high resolution bathymetry of the seafloor is ________
A) seismic reflection profiling B) echo sounding C) multibeam bathymetry D) sidescan sonar