Astudent drew the following flowchart.
blasting - collecting -hauling → crushing
which process is shown?
o
a. coal burning
o
b. crude oil refining
o
c. hydraulic fracturing
o d. surface mining

From which layer of atmosphere is the top layer of the thermosphere? a.troposphere b. stratosphere c.mesosphere d.exosphere hurry me i will give a braineilst

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?