Which of the following statements is true? A. Most meteors fall into Earth's oceans, where they cause no damage.
B. Jupiter is the only planet which rotates almost on its side.
C. Earth's blue color is the result of methane in the atmosphere.
D. Scientists believe that Mars once had water on its surface.

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.