A front is a boundary between two different types of air, such as warm air and cold air
Indicate whether the statement is true or false.
Answer: TRUE
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Some research has suggested that many toxic waste sites in white communities have been cleaned up faster and more completely than similar sites in African American and Latino communities have.
Answer the following statement true (T) or false (F)
Supernovae are one of the most extreme events in the known universe. They are caused by
A. the collapse of a supermassive supergiant star. B. the implosion of a white dwarf, which has run out of all its fuel. C. a supermassive supergiant star undergoing a massive nuclear chain reaction. D. any of the above
The criteria by which the region 'Africa South of the Sahara' is defined does not include which of the following factors?
A. The religious backgrounds of its people. B. whether or not a country is landlocked. C. The transitional northern boundary known as the Sahel. D. The physical borders along both the Atlantic and Indian Oceans.
Which one of the following processes would directly increase the amount of nutrients available to plants?
A) Respiration B) Mineralization C) Primary production D) Photosynthesis