Chapter 1 How Life on Earth Has Changed
Lesson 1.1 What Are Theories of Origins?
Summary: Although there are variations of each, two basic ideas about our origins exist: Creation and evolution. Creationists believe in Creation by God. Believers in Intelligent Design recognize that some things are best explained by a designer, but they do not attempt to identify the designer. Evolution claims that life arose spontaneously from nonliving matter and that all present life forms descended from a single-celled common ancestor. Microevolution involves small changes that can be documented, and all scientists agree that it happens. Macroevolution involves much larger changes, and not all scientists agree that the evidence supports it.
Lesson 1.2 What Does the Evidence Show?
Summary: Evolutionists and creationists interpret the same observable data in different ways. Evidence used frequently to debate life's origins includes embryological similarities, vestigial organs, genome similarities, the fossil record, homologous and analogous structures, and design. Ultimately, neither evolutionist nor creationism is a provable theory. Both are based on scientific evidence, but not all is explainable. They are accepted by faith.
Lesson 1.3 What Is Phylogenetics?
Summary: Organisms are classified based on body processes, obvious physical characteristics, cellular structure, and DNA. Organisms can also be classified based on assumptions that they evolved from common ancestors. This process of grouping is called phylogenetic analysis, or cladistics. The results of the analysis are displayed using phylogenetic trees, or cladograms. Often the cladograms show conflicting data, and scientists will choose the simplest option.
Chapter 2 Types of Plants
Lesson 2.1 How are Plants Classified?
Lesson 2.2 What Are Spore-Producing Plants?
Lesson 2.3 What Are Gymnosperms?
Lesson 2.4 What Are Angiosperms?
Chapter 10 Earth's History
Lesson 10.3 What Does the Fossil Record Show?
Chapter 11 Ways Matter Changes
Lesson 11.1 What Are Properties of Matter?
Lesson 11.2 What Are Mixtures and Solutions?
Lesson 11.3 What Are Acids and Bases?
Chapter 12 Elements and the Periodic Table
Lesson 12.1 What Are Atoms?
Lesson 12.2 How Are Elements Organized?
Lesson 12.3 What Are Metals?
Lesson 12.4 What Are Nonmetals and Metalloids?
Lesson 12.5 What Are Radioactive Elements?