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.
This older woman is exploring new avenues of enjoyment as she avoids stagnation in her later years
(a) The site of Zhoukoudian outside of Beijing, China, spans several hundred thousand years and (b)
Ngandong calottes from Java are the youngest H. erectus fossils at perhaps 27,000-50,000 years old.
Better land and water management and appropriate crop selection can help eliminate hunger
A man put aside $5710.00 at the end of every 3 months for seven years. How much will he have ...
Earth 240 Million Years Ago