Astronomy is the scientific study of celestial objects. (Such as stars, planets, comets, and galaxies)
Your body needs two key nutrients: calcium and vitamin D. Calcium is the mineral that strengthens bones and teeth, and vitamin D helps the body absorb calcium while improving bone growth. So stuff like <em>yogurt, milk, salmon, tuna, and spinach.</em>
Answer:
B or C i think
Explanation:
because Eons are broken into eras and then into periods. Its not A tho
