Lily would like to know what countries border the United States. What type of model should she use to determine this? A.
a topography map of the continental United States
B.
a street map of Washington, D. C.
C.
an atlas of the state of Texas
D.
a globe

Afarmer who is grown corn for the past five years notices in the sixth year that the his harvest is significantly smaller, despite an increase in labor on the farm. the following year, the harvest continue to decline. which of the following explanations most plausibly accounts for the reduction in corn yield? a) soil degradation b) desalinization c) better irrigationd) terracing