Roots growing in soil cannot remain under water because they will not receive oxygen and will not
perform ____.
a. photosynthesis c. transpiration
b. nutrient uptake d. cation exchange
B
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____ is the principle of adjusting letterspacing for visual purposes.
A. Kerning B. Typefacing C. Sizing D. Composition
The forward bias on a P-N diode to make the diode conduct must be greater than the:
A) barrier potential. B) volence bond. C) reverse bias. D) conduction bond.
The majority of southern whites owned no slaves because
A. they opposed slavery. B. they could not afford the purchase price. C. their urban location did not require them. D. their racism would not allow them to work alongside African Americans. E. they feared the possibility of slave revolts.
In order to persuade the Border States to remain in the Union, President Lincoln
A. relied solely on moral appeal. B. used only totally legal methods. C. guaranteed that they could keep slavery permanently. D. never had to use troops. E. used legally dubious methods including the declaration of martial law in Maryland and the deployment of Union soldiers in a local civil war in Missouri.