What is a good title for this chart?

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

Write a paragraph at least 10 sentences explaining how rocks are used today in society

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?