1. Introduction to Biology

What is the main effect of overpopulation on animal populations?

A group of biologists is studying the competitive relationships between two species of finches on an island. Over several generations, one species develops a deeper beak, allowing it to eat larger seeds, while the other develops a narrower beak for smaller seeds. Which evolutionary process best explains this change?

The Galápagos finches are an example of an array of species that:

How do moth larvae primarily survive predation in their natural environment?

Which statement best explains how deforestation affects organisms?

In evolutionary terms, an organism's relative fitness is measured by its __________.

Which of the following is a factor that affects natural selection?

Which of the following statements about the voyage of the Beagle is true?

In an area affected by industrial pollution, researchers observed the following data on moth populations:- Light-colored moths: 20% survival rate- Dark-colored moths: 75% survival rateBased on this data, which type of moth is best adapted to its environment?

Which statement best summarizes what has happened to life on the Galápagos Islands as a result of natural selection and evolution?

Which of the following is required for natural selection to take place?

Which of the following statements best compares the two dominant lineages of modern angiosperms?

Which of the following statements is NOT true with respect to natural selection?

Which structures are similar in function, but do not indicate that the organisms are related?

Tornadoes are catastrophic events that create change in ecosystems in which of the following ways?