Answer:
Compound sentence
Explanation:
A compound sentence is a type of sentence that contains an independent clause joined by a comma, or semicolon.
Therefore, from the given sentence, "Whenever the clock struck midnight, Cinderella lost her slipper", we can see that the sentence has an independent clause which is "Cinderella lost her slipper" which is joined to another clause with a comma.
Answer:
newspaper is an example of periodical
Solar technologies generate a majority of the power used during space missions, keeping life support and other vital spacecraft systems working. Solar power is so critical that NASA spends considerable time and money to make solar panels must more efficient, lightweight and affordable.