Which of the following states that sedimentary layers lay out laterally in all directions until they thin out? a. principle of stratum b. law of superposition c. principle of uniformity d. law of original continuity

The mantle is made up of which structural zones?

How has the geography of india made it difficult for its people to expand before modern technology?

The us and canadian governments are doing all of the following to combat environmental problems except a. encouraging the use of public transportation b. enacting clean water policies c. requiring emissions testing d. limiting animal populations in some regions