Worth 15 points please help.

Based on what you know about speed of light and sound, which come/comes first in a thunderstorm

What characteristic of the basin that feeds the congo river system affects movement in central africa? a. the center of the basin is a dense rain forest. b. it is the center of ethnic conflict in the area. c. wildlife on the savanna makes it too dangerous to travel. d. the basin is surrounded by desert.

Sort each of the planetary properties below based on whether they apply to some, all, or none of the four jovian planets in our solar system. jupiter and saturn only: -interior is mostly liquid or metallic hydrogen -composed mostly of hydrogen and helium uranus and neptune only: -blue color because of methane -composed mostly hydrogen compounds all four jovian planets: -approximately 10 earth-mass core -orbited by rings of ice and rock -magnetic field stronger than earth's -strong atmospheric winds and storms no jovian planets: -solid surface under a thick atmosphere