Sam drives an excavator at an open surface strip coal mine. which type of coal is he most likely to collect closest to the surface? -anthracite -subbituminous -lignite -bituminous -pitchblende

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?