NEED HELP FAST. I know it’s seems easy, I’m just not sure what the answer is

The universe contains..

A) few black holes
B) billions of galaxies
C) millions of stars
D) few wavelengths

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

2. cheryl hears a new song on the radio every day during the week on her commute to work. surprisingly, when the song comes on at a party on saturday night, she knows most of the words without trying. describe the three ways that we use cognition to learn without reinforcement. which type of cognitive learning without reinforcement best explains how cheryl knew the song lyrics? explain your answer.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above