Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that
A) arthropods evolved before vertebrates did.
B) extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates.
C) ancestral arthropods must have been poorly adapted to aquatic life, and thus experienced a selective pressure to invade land.
D) vertebrates evolved from arthropods.
E) arthropods have had more time to coevolve with land plants than have vertebrates.
An example of anatomical homology: homologous structures found in vertebrates.
Defying thousands of years of conventional wisdom, scientists are reporting that it is possible for
Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough
The cranium of early African H. erectus KNM-ER 3733 is nearly 1.8 million years old.
An overlapping record extends back thousands of years of tree ring width
Offset Method Plot of Land with Offset Lines