*50 POINTS*** PLS HELP Any change in gravity sends a through space.

a. sound
b. message
c. wave
d. force

How are carbon dioxide emissions affecting the earths natural cycle of temperature change? plz apex

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells