Answer:
B. How efficient can an engine be, in theory?
Explanation:
<span>They all depend on each other to function; an impact to one sphere usually affects another.</span>
Answer:
Earth Grows Warmer
Explanation:
If the imbalance is positive and more energy enters the system than exits, Earth grows warmer. If the imbalance is negative, the planet grows cooler.
Answer:What causes the Northern Lights? activity on the surface of the Sun.
Can you predict when and where there will be Northern Lights? Yes but with less certainty then whether predictions.
Explanation
