The agrarian revolution led to the industrial developments such as the steam tractor and steel implements that further advanced agricultural production worldwide.
a. true
b. false
a. true
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Coastal California is famous for fog and smog (fog mixed with smoke). Why is the California coast foggy/smoggy, whereas Houston, Texas, which is at similar latitude, might get occasional smog from too many cars, but fog is relatively rare?
A) Warm air in Texas rises to make clouds and not fog, whereas in California cold water from the ocean mixes with warm water from the land to generate fog. B) The ocean is warm off the Texas coast, but a cold current running offshore California generates fog when the cold, moist air is drawn ashore by a sea breeze. C) There isn't really any fog; it is all just smog from too many cars in California. D) Cold currents along the Texas coast inhibit fog, whereas the ocean is warm off California.
In a solution made from one teaspoon of sugar and one liter of water, which is the solute?
A) sugar B) water C) the teaspoon D) both sugar and water E) none of the above
The sites of natural outflows of groundwater to the surface are called _______________
Fill in the blank(s) with correct word
Of Earth's total number of species, why are the fewest in the marine pelagic realm?
a) There is more area on land for different species. b) Uniform conditions in the pelagic realm make fewer specialized environments for organism adaptation, evolution and radiation into different species. c) Organisms need a hard substrate (either land or sea bottom) in order to evolve into different species. d) Evolution of differing species is triggered by extinction, but extinction is rare in the pelagic environment. e) The pelagic realm contains the photic zone, and solar radiation in the photic zone suppresses the number of new species that evolve.