1. Introduction to Biology

How did Homo habilis's ("handy man") ability to make and use tools most significantly affect their lives?

Which of the following habitats is most likely to harbor the most recently diverged species?

Which of the following is the result of artificial selection?

Which of the following best defines 'natural selection' in the context of evolution?

Which organism would best be described as a specialist species?

How did the evolution of the jaw contribute to the diversification of early vertebrate lineages?

How can an individual be born with an adaptive trait?

A ____________ is an intermediate consumer in a food chain.

Which of the following best describes geographic isolation in the context of natural selection and evolution?

Which adaptation allows an organism to be well-suited for its environment in the context of natural selection?

Which of the following is an example of directional selection?

How does natural selection operate differently in populations that reproduce sexually compared to those that reproduce asexually?

An earthworm that feeds on the remains of plants and animals is acting as a _____.

Which best describes how an organism’s niche is determined?

If the prey population increases, then the predator population ____.