Page 316 - ABCTE Study Guide_Neat

Question

The fact that most living organisms that have evolved are now extinct reflects which of the following?

A Life on Earth is diminishing toward extinction.

B Earth was more suitable for life millions of years ago.

C There have been many changes in Earth’s climates and habitats.

D Evolution does not occur because species should be able to adapt.

Answer

The correct answer is C. As changes in climate, continental drift, competition for resources, and many
other factors place pressures on existing species, many are unable to evolve and adapt and eventually
become extinct.

Recommended Resources

Biology: Life on Earth . (Teresa Audesirk, et. al.): Prentice Hall, 2001.

Biology: Concepts and Connections . (Neil A. Campbell, et. al.): Benjamin/Cummings Publishing Co.,
2002.

Complete Idiot's Guide to Biology, The . (Glen Moulton): Alpha Books, 2004.

Dictionary of Biology, A . (Oxford Paperback Reference): Oxford University Press, 2000.

Earth & Space Science

The Solar System and the Universe

Lesson Objectives

In the upcoming pages, we'll cover the basics of our solar system and brush up on the planets and some other
celestial features.

Tools of the Astronomer

The basic tool that astronomers use to study celestial objects is the telescope. People tend to be most
familiar with optical telescopes, but astronomers use telescopes that span the entire electromagnetic
spectrum.