The main idea of the passage.
Answer:
I can't really help you do you have a link to the specific book or no.
Explanation:
Explanation:
Radio Waves -- The waves in the electromagnetic spectrum that have the longest wavelengths and lowest frequency are called radio waves.
Answer:
I dont have enough info
Explanation:
It's asking what Spaceships is used in. yet I dont see a sentence using the word spaceships