Recycling aluminum produces 97% less water pollution than mining and processing aluminum ore.
Answer the following statement true (T) or false (F)
True
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If wastage is greater than accumulation, a glacier is said to be ____
A)advancing B)melting C)surging D)retreating E)stable
What is the Gaia hypothesis?
A) a hypothesis that states the Earth is alive B) the concept of environmental unity C) the hypothesis lying at the root of uniformitarianism D) a set of hypotheses that likens the Earth to a superorganism with interrelated, mutually adjusting systems
Converging plate boundaries are often sites of metamorphism and igneous activity. Indicate whether the statement is true or false
Which is a condition in which an element substitution could occur?
A) an ion is much larger than the one it will replace B) an ion has a +4 charge, and it will replace an ion with a +3 charge C) an ion has an equal charge to the one it will replace D) an ion is much smaller than the one it ill replace