Under what conditions does a mineral most easily dissolve in water? (2.3)
What will be an ideal response?
Answer: A mineral dominated by ionic bonds dissolves easily in water. Adding acid to water further enhances solubility, because acids contain ions that draw atoms in minerals apart from one another.
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The current rate of extinction is between _____ and _____ times the rate that existed before humans arrived on Earth
a. 5 and 10 b. 10 and 100 c. 100 and 1,000 d. The rate is the same as it was before humans arrived on earth. e. There is no way to determine the extinction rate before humans arrived on earth, so these numbers cannot be estimated or compared.
At the beginning of the Paleozoic, _______________ major continents were present
Fill in the blank(s) with correct word
About what percent of Earth's water can be found in the oceans?
A) 90% B) 70% C) 97% D) 53%
As Earth’s atmosphere warms, populations in northern climates will likely experience more droughts and floods
a. True b. False