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.
History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar
During drought years on the Galapagos, small, easily eaten seeds become rare, le
Abandoned Mine Land
School age (late childhood): 6–12 years, or to puberty.
Stepwise approach for managing asthma in adults and patients 12 years and older.
Plot of land (Part c)