Which planet is the most massive of the gas giants?
a. jupiter
b. saturn
c. uranus
d. neptune

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

Name the river that forms a natural border between new york and new jersey and is the site where a passenger jet made a miraculous landing on january 15

What does the kyoto protocol aim to reduce