Which of the following is a way that biofuel can DIRECTLY increase the
longevity of our fossil fuel reserves?
A. burning dead plants for energy
B. using the methane that leaks from landfills for energy
C. biofuel is mixed with gasoline and used in vehicles
D. burning wood in your fireplace

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.