The three most abundant elements in Earth's crust are
A) oxygen, silicon, and aluminum. B) rock, water, and tectonics.
C) magnesium, potassium, and oxygen. D) iron, aluminum, and granite.
A
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What will be an ideal response?
Physical, chemical, and biological factors contribute to soil formation.
Answer the following statement true (T) or false (F)
Where in the Earth's atmosphere are chemicals most likely to be dispersed and present for a long period of time?
A) thermosphere B) mesosphere C) stratosphere D) ozone layer E) troposphere Read the accompanying scenario and answer the following questions. The human body has the capacity to do work or engage in energy each day. Answer the following questions about the energy you have as you run a triathlon.
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Answer the following statement true (T) or false (F)