Catalysts serve to _________ the rate of chemical reactions by _________ the activation energy.
Fill in the blank(s) with the appropriate word(s).
Answer: increase, lowering
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What is ultimate base level for most streams?
A. an ocean B. a lake C. a reservoir
The ________ is the idea or concept that ancient life forms succeeded each other in a definite, evolutionary pattern and that the contained assemblage of fossils can determine geologic ages of strata
A) law of fossil regression B) law of correlative indexing C) principle of cross correlation D) principle of fossil succession
The transfer of heat to circulating air, such as when cool air moves across the body's surface, is called:
A. radiation. B. conduction. C. convection. D. evaporation.
Latent heat is the quantity of heat gained or lost as a substance undergoes a ________
A) change in chemical composition B) change in molecular weight C) change in state D) change in atomic mass E) change in subatomic structure