What type of drainage patterns can you observe in this map of part of the Appalachian Mountains and adjacent areas?  Select all that apply. 

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

A. ?2 B. ?6 C. +2 D. +6 E. would probably not ionize

Soil erosion from farmland can be reduced by all of the following methods except

A. terracing of fields. B. complete clearing of fields after harvest. C. contour plowing. D. use of windbreaks.

Which pair of fault types below are most similar in terms of stress orientation?

a. normal fault, thrust fault b. reverse fault, normal fault c. reverse fault, thrust fault d. thrust fault, strike-slip fault

Which statement regarding mammals is false?

A. All mammals feed their young milk. B. All mammals have nipples. C. Some mammals lay eggs. D. Marsupial mammals are born at an earlier developmental stage than placental mammals.