What is the dependent variable in her experiment?
a: time (days)
b: duckweed growth
c: amount of duckweed
d: different water ph levels

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Why are fossils not found in igneous rocks? igneous rocks are made from cooling of lava or magma. igneous rocks are found too deep underground. igneous rocks are too dark in color to contain fossils. igneous rocks are too dense to contain fossils.

What advantages does a pedigree have over a written passage?