What are your answer choices? i would say wave energy
Answer:
The answer is- A). Because it takes tremendous effort to break free from the laws of gravity to exit the Earth's atmosphere.
Explanation:
I really don't have an explanation. Except that I love science and I actually pay attention in my classes.
Answer:
C & D
Explanation:
C - The Sun has an 11 year solar cycle. When the solar cycle is at a <em>minimum</em>, active regions of the sun are rare and not many solar flares are detected. They dramatically increase as the Sun approaches the <em>maximum</em> part of its cycle.
D - It's the Sun. It's moody. Solar flares are pretty sporadic, they're sudden and often unpredictable.