Which of the following gaseous molecules functions as a secondary messenger?
A) NH3
B) N2O
C) NO
D) NO2
C
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Which of the following best describes what is meant by an ecological footprint?
a. It is the average size of the lot on which a family home is built. b. It is the number of acres necessary to grow enough food to support a family. c. It is the geographic area in which a person travels during the course of their average daily activities. d. It is the amount of biologically-productive land and water needed to supply the people in a particular country or area with the resources they need. e. It is the amount of tillable agricultural land necessary to supply the food requirements of a nation.
__________ a region from which a phenomenon (cultural trait) originates
Fill in the blank(s) with correct word
The world's driest desert is the Atacama Desert in South America
Indicate whether this statement is true or false.
Where does the quartz in granite typically end up?
A. as small clay minerals that are deposited in lakes and the sea B. it ends up as sand in rivers, dunes, and beaches C. it is converted into feldspar and weathers into clays D. quartz does not weather and so it keeps the granite from weathering