The Dutch devised a method in the form of __________ to reclaim land from the sea.
Fill in the blank(s) with the appropriate word(s).
Polders
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Most of the productive coal beds of Paleozoic age are found in rocks formed during the ____________________ period
Fill in the blank(s) with correct word
The unusual forest biome occurring in California, Oregon, Washington, and British Columbia is called a
A. temperate rainforest. B. temperate deciduous forest. C. boreal forest. D. tropical rainforest.
The basic sampling unit, in soil surveys representing all the characteristics and variability used for classification, is the
A) pedon. B) polypedon. C) soil horizon. D) soil section. E) soil profile.
Earth's initial atmosphere formed from ________
A) leftover gases from the nebula B) the Sun's solar wind C) outgassing D) comet vaporization