Toxicologists designate particularly long-lived and widely dispersed organic chemicals as persistent organic pollutants (POPs). Which of the following chemicals are in this category?
A) PCB
B) U235
C) lead
D) carbon monoxide
E) cadmium
Answer: A
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A banana is produced in one country, where it is grown using a pesticide that is banned in a second country. If it is shipped to the second country with some residue of the pesticide still remaining, then that would be an example of the____________________.
Fill in the blank(s) with the appropriate word(s).
What type of marine scientist studies the Earth's ocean, continents, and climate?
a. Physical oceanographer b. Marine climatologist c. Chemical oceanographer d. Marine geologist
The use of public transportation is ________
A) one of the best options for decreasing the use of fossil fuels for transportation B) increasing rapidly in the face of concerns over climate change C) more expensive than driving a car D) subsidized by the U.S. government E) higher in the United States compared to Europe
An air mass is a mass of air that may extend through the lower half of the troposphere and is homogenous in terms of temperature and humidity
Indicate whether the statement is true or false