_______________ is a thick sludge composed of water, with particles of coal, rock, and clay.
Fill in the blank.
The answer is Shale
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What is the Forchhammer's principle?
A) The saturation level of seawater B) The constant proportion of solids in seawater C) The components of seawater from weathering surface rocks D) The measure of the total mass of halogen ions
A(n) ________ ecologist would study the interactions between the invasive European starling and native cavity-nesting birds in the United States
A) community B) ecosystem C) population D) organismal
The ________ is an example of an invasive species that is having a major impact on North American waterways
Fill in the blank(s) with correct word
Storms that form in the tropics are given names when
a. ?they reach tropical storm strength. b. ?they become fully developed hurricanes. c. ?they approach to within 250 miles of land. d. ?rotation becomes visible on a satellite photograph. e. ?as soon as they form.