Predict the body parts that you will use as you do this activity. Students know many multicellular organisms have specialized structures to support the transport of materials.Д¦ What parts of your body are you using? Make a Prediction Pick one of the following activities: Write your name. What activities do you use your brain for? 110 ENGAGE 5 LS 2.a. Journal Write about it 109ДҐ Lesson 1 The Human Body Cells like this one carry the brain s messages to all parts of your body. Then include important facts and details. Start by telling the main idea of the article. Write About It Response to Literature In this article, you learned about the difference between aerobic and anaerobic exercise. However, any exercise, whether its walking, hiking, skating, or practicing karate, is better than none. For kids, aerobic exercise is considered the most healthful kind. Anaerobic exercise is an excellent way to help build muscle. Another kind of exercise, called anaerobic, involves short bursts of intense activity, such as sprinting over a short distance or lifting weights. ) Aerobic exercise is very good for the health of the heart and lungs, although it s usually not good to exercise so hard that it hurts or is difficult to breathe. If you dance, jump rope, ride your bike, or do anything else that makes you breathe hard and increases your heartbeat for an extended period of time, you re doing aerobic exercise. 108Д¤ from CURRENT HEALTH Different kinds of activities have different effects on the body. Offer a concluding paragraph that summarizes important ideas and details.

ELA W Create multiple-paragraph expository compositions: c. 107ДЈ Literature MAGAZINE ARTICLE ELA R Discern main ideas and concepts presented in texts, identifying and assessing evidence that supports those ideas. Plants and animals have structures for respiration, digestion, waste disposal, and transport of materials. 1 CHAPTER 3 Human Body Systems How does your body work? 106Дў Lesson 1 The Human Body PAGE 110 Lesson 2 The Digestive System PAGE 120 Lesson 3 The Respiratory System PAGE 132 Lesson 4 The Circulatory System PAGE 142 Lesson 5 The Excretory System PAGE LS 2.

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