Why do scientists believe the universe is still expanding? b The further away an object is, the higher the temperature and pressure eventually become, causing nuclear fusion Distant objects shift in frequency toward red on the electromagnetic spectrum, which tells us objects are moving away from us Spiral galaxies spin, so they appear to be a rotating disk of stars and dust Distant objects shift in frequency toward blue on the electromagnetic spectrum, which tells us objects are closer to us us

it’s distant objects shift in frequency toward red on the electromagnetic spectrum, which tells us objects are moving away from us!

Explanation: This is correct because I got this one right on my quiz and I took notes on it!

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called