Which reaction represents a synthesis reaction? A. CO₂ → C + O₂ B. Cu + O₂ → CuO₂ C. Zn + CuSO₄ → ZnSO₄ + Cu D. NaOH + HCl → NaCl + H₂O

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

List the path of the respiratory system