The various Galpagos finch species
A) evolved in South America and flew to the Galpagos Islands.
B) evolved from a single ancestral species that flew to the Galpagos Islands.
C) all feed on the same diet in the Galpagos Islands.
D) are primarily different because of variations in the structure of their feet.
Question 2
Many of the 1.3 billion people who lack electricity live in rural regions where
A) nuclear energy is most useful.
B) hydroelectric energy is the best energy resource.
C) hydrogen fuel cells are most useful.
D) solar energy is most useful.
Keystone species.
lion cubs in the wild, South Africa
The magnetic field of Uranus as observed by Voyager 2 in 1986. S and N are magnetic south and north
Reconstructed Australopithecus afarensis spine shows that species walked upright.
Endocasts from South African australopithecines.
Four kinds of evidence supporting the theory that species evolve.