1. Introduction to Biology

In the 1820s, what did scientists commonly believe dinosaurs actually were?

In the context of natural selection and evolution, scientists have observed that not all atmospheric carbon can be accounted for. Where do scientists believe the 'missing' carbon is going, and why is there uncertainty about its exact destination?

How does natural selection lead to evolution in a population over time?

Which of the following is the best description of the cane toad's introduction to Australia?

Why is Darwin's theory of evolution by natural selection not 'just a theory' in the scientific sense?

Which concept in natural selection is best illustrated by the statement: "more offspring are produced than can survive"?

Which of the following explains why sickle-cell disease continues to persist in Africa?

Which of the following is a cause of evolutionary change?

Which of the following increases species diversity?

What is kin selection in the context of natural selection and evolution?

Which type of isolating mechanism played a key role in the formation of different Galápagos finch species?

Which of the following provides an accurate explanation for why vestigial structures may occur?

Which of the following best completes the concept map by describing the main mechanism by which evolution occurs in natural populations?

Why is it important to recognize how complex life is interconnected in the context of natural selection and evolution?

Which of the following best explains how wildfires can stimulate plant reproduction in certain ecosystems?