Researchers are using ______ to map and plot locational variations of endangered languages in the African region
a. geographic information systems (GIS)
b. paper and pencil
c. surveying and property lines
d. digital elevation models (DEM)
A
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________ first suggested that glacial/interglacial episodes are related to variation in solar radiation cycles.
A. C. Plummer B. I. Newton C. A. Einstein D. M. Milankovitch E. D. Carlson
The general effects of elevation and latitude are the same on climate and biomes
Indicate whether the statement is true or false
At about what frequency is Earth struck by a meteorite large enough (about 10 km in diameter) to cause mass extinctions?
A. about every 100 million years B. about every 10 million years C. about every 1 million years D. This has yet to occur on Earth.
What is the main problem facing Ogallala aquifer?
a) overpumping may cause southern parts of the aquifer to go dry in the next 100 years b) it has become contaminated with radioactive waste from the Chernobyl accident c) precipitation is heavier to the east, causing tilting of the entire formation d) leakage from chemical processing plants are polluting the entire aquifer e) the groundwater is becoming more salty from water from the pacific Ocean