What is cement to a geologist?

a. the material used to make buildings and sidewalks
b. a natural form of glass
c. a collection of interlocking grains
d. the mineral materials that bond grains together

What are two australian geographical features that hindered early exploration? western plateau gulf of carpentaria great barrier reef great dividing range

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.

In which layer of the atmosphere are the particles so far apart that they can travel hundreds of kilometers without colliding with each other? a.exosphere b.troposphere c.mesosphere d.thermosphere