Examlex
During most of the Mesozoic Era,Earth was ________.
Crustaceans
A diverse group of aquatic animals that have a hard exoskeleton, including species such as crabs, lobsters, and shrimps.
Mollusks
A large and diverse phylum of invertebrates that includes snails, slugs, oysters, and octopuses, with a soft body and, frequently, a calcium carbonate shell.
Notochord
A flexible rod made out of a material similar to cartilage that provides support in the embryonic stages of all chordates and some adult animals.
Phylum
A major category in the classification of living organisms, ranking above class and below kingdom.
Q5: Which of the following represents a unidirectional
Q12: What is meant by a "stealth democracy?"
Q23: The figure below is an aerial photograph
Q24: The primary challenge of hydrogen fuel cells
Q27: The Carboniferous Period was a time when
Q29: Which part of the Constitution emphasizes a
Q32: What does it mean that people often
Q40: Which one of the following events caused
Q72: Collective action problems<br>A) are very rare in
Q78: The Fourth Amendment<br>A) provides the right to