Answer:
E. Fracking
Explanation:
The process involves the high-pressure injection of 'fracking fluid' into a wellbore to create cracks in the deep-rock formations through which natural gas, petroleum, and brine will flow more freely.
The displacement is 6.7 km to the northeast.
Displacement = 5 km + 1 km = 6 km to the east and 3 km to the north.
The net displacement is the <em>hypotenuse of a right-angled triangle</em> with sides
6 km and 3 km.
According to <em>Pythagoras’ Theorem</em>,
<em>a</em>^2 + <em>b</em>^2 = <em>c</em>^2, where <em>c</em> is the hypotenuse and <em>a</em> and <em>b</em> are the other two sides.
<em>c</em>^2 = (6 km)^2 + (3km)^2 = 36 km^2 + 9 km^2 = 45 km^2
<em>c</em> = √(45 km^2) = <em>6.7 km NE
</em>
Answer: D. Sublimation
Explanation: I just took the test.