What is the chemical structure of all silicate minerals, and why are silicate minerals so important? What will be an ideal response?
All silicate minerals contain silica, which is made of one silicon and oxygen. Silicate minerals include
about one-third of all minerals; together they make up 95% of Earth's crust.
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The number one metropolitan area for headquarters for large firms is __________
Fill in the blank(s) with correct word
Based on the information in Figure 3.5, which city is most likely to be the next hypercity?
A. Mumbai, India B. Bangkok, Thailand C. Seoul, South Korea D. Mexico City, Mexico
According to environmental scientists, what are the desired criteria for an energy source in deciding which one to use?
A. High or medium net energy yield with low environmental impacts B. Low or negative net energy yield with low environmental impacts C. High or medium net energy yield with high environmental impacts D. Low or negative net energy yield with high environmental impacts
Based on the daily air quality index released in the U.S., a value of 101 to 150 indicates
A) air quality is satisfactory and air pollution poses little to no risk. B) some pollutants may pose health concerns for unusually sensitive individuals. C) everyone may experience serious health effects from hazardous air conditions. D) the entire population may be affected by the air quality. E) at risk populations may be adversely affected, but the general public will likely not.