Scientists believe that is an example of an internal force that changes the earth’s crust.
a. mining
b. plate tectonics
c. human development
d. erosion

Which of these is least likely to be an adaption? a. a mouse digs a hole to hide from predators. b. a snake bites its prey to deliver it deadly venom. c.a jackrabbit has large ears that it release body heat. d.a parrot learns to say its owner's name.

If the distance between two points on the ground is 10 miles and the distance between the same two points on a map is 4 inches, what is the map scale expressed as a ratio?

The graph shows the number of employed workers in the united states in nonfarm jobs from 2008 to 2013. the best conclusion that can be drawn from the graph is that the number of nonfarm jobs remained consistent over time. started going down in 2008. went up every year since 2008. started going down in 2010.