An atom loses an electron to another atom. Is this an example of a physical or chemical change?
A. chemical change involving the formation of neutral atoms
B. physical change involving the formation of negative ions
C. physical change involving the formation of positive ions
D. chemical change involving the formation of ions
Answer: D
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Land use change occurs through conversion from one use to another or by modifications of existing cover
Indicate whether this statement is true or false.
At which of the following locations and times is the deepest radiation inversion likely observed?
A. in a deep valley during the summer B. on a desert in winter C. in polar regions in winter D. at the top of a high mountain in winter
Curved water surfaces:
A) have the same evaporative properties as do flat surfaces. B) can require relative humidities greater than 100 percent. C) have lower evaporation rates than do flat surfaces. D) are rarely found in nature.
Cities in MexAmerica that have been the most impacted by NAFTA are located near ________ and ________
Fill in the blank(s) with correct word