When answering a short answer question students should present key facts in which format? a essay formatc. short, choppy sentence formatb. one word answer formatd. three paragraph format2eltetblogsitebedetmorel select the best answer from the choices

The correct answer is (a.) in the coming years, the reyes family will save money because solar power requires little maintenance, and the energy used is free.

1. why do astronomers think that there may be other advanced civilizations?
because  it was discovered that there are other planets like earth out there, able to  accommodate life forms.
2. what technologies are astronomers using to look for life on other planets? why?  
they  have used radio telescopes, but now they use laser telescopes   to track laser communications.