Download Biology of Humans: Concepts, Applications, and Issues, by Judith Goodenough PDF

By Judith Goodenough

With a brand new open, student-friendly structure and extra media integration, the Fourth version of Biology of people: suggestions, functions, and concerns keeps to customize the examine of human biology. Its conversational writing sort, wonderful artwork, ample purposes, and studying instruments improve your critical-thinking talents. The authors offer a conceptual framework that will help you know how bodies paintings, and to house concerns correct to human wellbeing and fitness in today’s international. You’ll achieve an appreciation for the intricacy of the human physique and where of people within the ecosphere.

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Extra info for Biology of Humans: Concepts, Applications, and Issues, Fourth Edition

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Rain forest animals also have adaptations—the ability to fly or climb, for example—that enable them to reach the plants for food. Adaptive traits and evolution are discussed in Chapter 22. stop and think Scientists have discovered water and methane on Mars. Water is necessary for life. Solar radiation would quickly destroy methane, so “something” must be producing the methane we detect. If samples of water or soil from Mars were brought back to scientists on Earth, what characteristics of life could they look for to determine whether the samples contain anything that is or was once alive?

Highlighting the Concepts Basic Characteristics of All Living Things (pp. 1–4) Levels of Biological Organization (pp. 5–6) • Life cannot be defined, only characterized. • Living things contain nucleic acids, proteins, carbohydrates, and lipids; are made of cells; grow and reproduce; metabolize; detect and respond to stimuli; and maintain homeostasis. Populations of living things evolve over long periods of time. • Human biology can be studied at different levels. Within an individual, the levels of increasing complexity are molecules, cells, tissues, organs, and organ systems.

Although these results are reassuring, additional research must be done. Cell phone use is a relatively new practice, and many cancers take years to develop. You can find current information on cell phones and cancer on the website of the American Cancer Society. Critical Thinking to Evaluate Scientific Claims Few of us perform controlled experiments in our everyday lives, but all of us must evaluate the likely validity of scientific claims. We encounter them in many forms—as advertisements, news stories, and anecdotes told by friends.

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