The movement of Earth in its orbit around the Sun is referred to as ________
Fill in the blank(s) with correct word
revolution
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Based upon the history of the U.S. federal government's involvement in controlling water pollution, which one of the following scenarios would have most likely occurred?
A) In 1908, federal inspectors reported unacceptably high levels of petroleum products in a river. B) In 1898, a city receives a federal grant for one million dollars to improve its handling of industrial wastes draining into a nearby river. C) In 1947, agents of the federal Environmental Protection Agency fined a company for dumping industrial waste into a local stream. D) In 1952, federal agents advised a city on the best way to handle its sewage and storm water.
Which of the following reflects growing environmental awareness in North America?
A) fewer farms that are larger in size B) the selective removal of dams C) heavy reliance on pesticides and herbicides in industrial agriculture D) government incentives for coal as a primary energy source E) the over-pumping of water for irrigation from the Ogallala Aquifer
How are jet contrails thought to influence the surface temperatures of cities near major airports?
A) Decrease the daily temperature range. B) Definitely make the daily mean temperature cooler. C) Definitely make the daily mean temperature warmer. D) They have no measurable influence on surface temperature.
After a mass extinction, the earth's overall biodiversity eventually returns to equal or higher levels.
Answer the following statement true (T) or false (F)