The correct answer is - 45 percent.
Since the clock produces 45 useful unites energy units for every 100 unites of energy that it uses, than it turns out that the efficiency of the clock is 45 percent.
Answer:The phase of moon when between new moon and half moon is crescent and more than half and less than full is gibbous. Thus, during waxing gibbous and waning gibbous, the phase of the moon would be more than half of moon's surface.
Explanation:Waxing gibbous
Six:
1. Upper Mississippi
2. Arkanas River
3. Illinois River
4. Missouri River
5. Ohio River.
6. Red River
