Since the Industrial Revolution
A) human population growth rates have decreased with a subsequent decrease in the warming trend that characterized pre-Industrial Revolution times.
B) global temperatures rapidly increased, then steadied out over the past 25 to 30 years.
C) global temperatures have continued to warm at accelerating rates.
D) no observable warming or cooling trends have occurred, rather temperatures have oscillated between warm and cold periods.
C
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What would be the overall response of ecosystems in Namibia to increased rates of precipitation?
A) Plants and animals would suffer B) Plants and animals would thrive C) There would be no change in ecosystem success
Why is heat often added to chemical reactions performed in the laboratory?
A. to increase the rate at which reactant collide B. to allow a greater number of reactants to pass over the activation energy C. to compensate for the natural tendency of energy to disperse D. all of the above
Water evaporated from the ocean surface is moved by ____
a. cold fronts b. wind c. precipitation d. climate e. condensation
If phenolphthalein is used as an indicator which of the following will be observed if excess sodium hydroxide is added to acetic acid?
A) from colorless to pink B) from red to yellow C) from pink to colorless D) from yellow to red