This resource is a unit for Honors English 11, on teaching the novel Water for Elephants. It includes a complete unit, with reading schedule and lesson plans, quizzes, worksheets, review materials as well as a final exam. A wide variety of questions and bonus questions are provided for every chapter. Themes are examined as well. This resource is designed to engage students with the concepts of aging, love, nostalgia, the history of the circus, and how the standards of the past can be compared to the standards of today.
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Lesson 48, The Digestive System
Animals need to absorb nutrients to obtain energy. The process of
breaking down food to obtain nutrients is called digestion. Animals are
adapted to ingest and digest food in different ways, but many
invertebrates and all vertebrate animals have a specialized digestive
system to facilitate the processes involved.
Structurally simple animals like sponges, flatworms and hydras have
a simple digestive system with a single opening. Other animals have a
complete digestive system running from the mouth to the anus.
This Lesson looks at the general structure of an animal digestive
system, We’ll go on to follow the path of food through the human
digestive system, examining the roles of the different organs involved,
and seeing how fats, carbohydrates and proteins in foods are broken
down by enzymes and other chemicals in the digestive tract.
We’ll also examine the control of the digestive system, which involves both nervous and hormonal processes.