Darwin drew on multiple lines of scientific evidence to supp…

Darwin drew on multiple lines of scientific evidence to support his theory of evolution by natural selection in On the Origin of Species. From at least three different sub-disciplines of biology (such as paleontology, anatomy, embryology, or ecology), describe the types of evidence he used and explain how each one supports the theory. What are three examples of such evidence, and how does each contribute to the argument for evolution by natural selection?

A population of hummingbirds has a range of beak lengths. Af…

A population of hummingbirds has a range of beak lengths. After discovering a new food source—nectar deep inside long, trumpet-shaped flowers—hummingbirds with longer tongues begin to survive and reproduce more than others. Over time, most hummingbirds in the population have longer tongues. Which type of natural selection is most likely responsible for this change?

Imagine scientists extract a continuous 3,000-foot-long core…

Imagine scientists extract a continuous 3,000-foot-long core of rock from Earth that contains fossilized remains of organisms. According to the theory of evolution by natural selection, what general pattern would be expected in the fossil record found throughout the core sample?

Your friend was prescribed antibiotics for bacterial pneumon…

Your friend was prescribed antibiotics for bacterial pneumonia. After starting the medication, she feels better and decides to stop taking it before finishing the full course. She tells you she plans to save the remaining pills for the next time she gets sick. Using evolutionary concepts, explain why this is a bad idea. What could happen as a result of not completing the full antibiotic treatment?