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YOUR TEXTBOOK AT A GLANCE
BE A SCIENTIST
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ball body bulb carbon caterpillar clownfish communicate CONCLUDE AND APPLY Copernicus Crater craters critical thinking Apply DISCUSSION STARTER Draw Earth eclipse ecosystem electricity enter the keyword environment erosion experiment Explore Activity shows food chain food web force friction frogs gases germs GOING FURTHER grow habitat hand lens happens heat inclined plane infer kinds lever light liquid living things lunar eclipse magnet materials MATTERS think MATTERS write measure meteorite minerals Moon Moon's move nutrients object Oobleck orbit the Sun organisms oxygen plant and animal plastic pond ecosystem predict PROBLEMS and PUZZLES PROCEDURES pull reading skill resource rocks Science Journal scientists seeds shape simple machine skin soil solar solar eclipse sow bug space surface temperature test your ideas trees UNDERSTANDING SCIENCE IDEAS visit www.mhschool.com/science weathering white blood cells Write a hypothesis www.mhschool.com/science and enter