The moon has a greater effect on the Earth's tides than the sun because:
a. it is much closer to the Earth than is the sun
b. it is solid and the sun is just a mass of burning gas.
c. it is always between the Earth and the sun.
d. its density is much greater than the sun's.
a
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On an upper-level chart, normally we find warm air associated with ____________________ pressure, and cold air associated with ____________________ pressure
Fill in the blank with correct word.
In 2010, Metro Portland made a historic agreement between landowners and citizens which ________
A) converted all undeveloped land to restored natural ecosystems B) put up undeveloped land at auction to be sold to the highest bidders, public or private C) prohibited agriculture on any undeveloped land in the region D) each individual landowner was given an equal portion of the region's land E) included a regional plan to identify exactly where urban growth would be allowed
Growing rice results in the release of ________ into the atmosphere
A) methane B) sulfur oxides C) nitrous oxide D) ozone E) sulfate aerosols
Which of the following statements applies to stratospheric ozone?
A. It is one of the main ingredients of photochemical smog B. It is a health hazard for people with respiratory illnesses C. It protects life from harmful ultraviolet radiation D. It is originally formed in the troposphere