If a layer was deposited but does not appear in the rock record what has occured? a. erosion b faulting c folding d eruption

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer

Many somalian refugees sought entrance to the united states in 2006 and 2007. describe factors that encoura somalians to leave their country in the 1990s and 2000s