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.
Female leopard in the Sabi Sands area of South Africa. Note the white spot on its tail, used for com
A day-flying Hummingbird Hawkmoth drinking nectar from a species of Dianthus
Penguin, South Georgia Island
Rockhopper Penguin in Falkland Islands
Andy Warhol, San Francisco Silverspot, from the series Endangered Species
Life cycle of a Plasmodium species that causes malaria