If the maximum temperature for a particular day is 26 degrees C and the minimum temperature is 14 degrees C, the daily mean would be ________

40 degrees C
20 degrees C
12 degrees C
13 degrees C


20 degrees C

Environmental & Atmospheric Sciences

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The electrons flow in a wire is due to

A. a potential difference across its ends. B. a difference in potential energy across its ends. C. an imbalance of charges in the wire. D. none of the above

Environmental & Atmospheric Sciences

Which one of the following items is a major disadvantage of animal feed lots?

a. Less land is required to feed the animals. b. Use of antibiotics can increase genetic resistance to microbes in humans. c. Soil erosion is reduced. d. Overgrazing is reduced. e. Biodiversity is protected.

Environmental & Atmospheric Sciences

What areas are typically the most affected by eutrophication?

a. Estuaries b. Open ocean c. Deep ocean d. Continental rise e. Offshore sediments

Environmental & Atmospheric Sciences

The west coast of the United States receives two high tides and two low tides of varying heights per day. What kind of tidal pattern is this?

A) Diurnal tides B) Semidiurnal tides C) Semidiurnal mixed tides D) Spring tides

Environmental & Atmospheric Sciences