In order for a solar eclipse to occur, the earth, moon, and sun must a) form a right angle with the moon in the middle. b) form a straight line with the moon in the middle. c) form a right angle with the earth in the middle. d) form a straight line with the earth in the middle.

The difference(s) between the grand canyon and valles marineris is/are: (a) the grand canyon was formed by water, but valles marineris was not. (a) valles marineris is much longer than the grand canyon. (c) valles marineris is much wider than the grand canyon. (d) valles marineris has large volcanoes near it. all of the above

Which statements are accurate about snow flakes

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d