The term "heterogeneous catalyst" means which of the following?
A) A catalyst which does not have uniform composition.
B) A catalyst which is of a different phase from that of the reaction it catalyzes.
C) both a and b
D) neither a nor b
B
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How long will it take to add another billion people to the world's population given the current growth rate?
A. 12 years B. 2 years C. 22 years D. 50 years
The Inuit people are at greatest risk to the biomagnification of persistent organic pollutants because, within their ecosystems, the Inuit people are functioning as
A) primary producers. B) primary consumers. C) secondary consumers. D) decomposers and detritus feeders.
Where will you find the Gulf Stream?
A) Along the Gulf Coast of the United States, where rivers feed into the ocean B) Off the east coast of the United States C) In the Gulf of Mexico D) In the upper atmosphere
Describe how the advent of agriculture changed human societies
What will be an ideal response?