Approximately what percent of the Earth’s hydrosphere is contained in frozen ice such as glaciers and polar icecaps? A.
2%
B.
97%
C.
50%
D.
75%

What causes the cycle of seasons on earth? the tilt of earth’s axis the shape of earth’s orbit the direction of earth’s orbit the distance between earth and the sun

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

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things