A)It is a good example of punctuated equilibrium.
B)It shows that mammals and birds evolved from the same kind of dinosaur.
C)It includes transitional forms with progressively specialized teeth.
D)It indicates that mammals and dinosaurs did not overlap in geologic time.
E)It includes a series that shows the gradual change of scales into fur.

A)generate intense lightning storms.
B)change the atmosphere from oxidizing to reducing.
C)make it easier to maintain reduced molecules.
D)cause iron in ocean water and terrestrial rocks to rust (oxidize).
E)prevent the formation of an ozone layer.

A)How can amino acids, simple sugars, and nucleotides be synthesized abiotically?
B)How can RNA molecules catalyze reactions?
C)How did RNA sequences come to carry the code for amino acid sequences?
D)How could polymers involving lipids and/or proteins form membranes in aqueous environments?
E)How can RNA molecules act as templates for the synthesis of complementary RNA molecules?