Evolutionary biology extends and amplifies the explanation of biological phenomena. It complements studies of the proximate causes (immediate, mechanical causes) of biological phenomena If we ask what causes a male bird to sing, the proximate causes include the action of testosterone or other hormones

#Question id: 10833

#Section 2: Evolution

All the organisms that occur in the redwood community

#Question id: 11169

#Section 1: Ecology

The viceroy butterfly (limenitis archippus) resembles the queen butterfly (danaus gilippus), a species toxic to birds because of alkaloids it stores during larval development from the milkweeds it feeds upon. The viceroy butterfly is an example of what kind of defense against predation?

#Question id: 3396

#Section 2: Evolution

The Galapagos finches were an important clue to Darwin's thinking about the origin of species. These finches are believed to have descended from a single ancestral species that colonized the Galapagos archipelago, America, over a short period of time. The Galapagos finches differ in their beak shape and size. Different species feed on seeds that vary in size and hardness. Which of the following is the most likely explanation for these patterns?

#Question id: 16832

#General Aptitude

Which figure is a rotation of the object?

#Question id: 10859

#Section 2: Evolution

Plants that depend upon ants to spread their seeds