[...]... 8 the amount of base in a substance 5 the upper layer of soil, which is made mostly of humus, minerals, water, and air 9 the living and nonliving things in an area that interact with one another 6 the study of organisms and how they interact in an ecosystem 7 the role of an organism in an ecosystem Chapter 1 • Earth’s Ecosystems Reading and Writing in Science Use with Lesson 1 Introduction to Earth’s... that help them reach and ingest food All of these organisms fill critical roles in the They live and grow on every surface in the world 16 Chapter 1 • Earth’s Ecosystems Reading and Writing in Science Use with Lesson 3 Microscopic Organisms on Earth © Macmillan/McGraw-Hill of their cells Amoebas have Name Date Reading Meet Maria Pia Di Bonaventura Read the Reading in Science feature in your textbook Look... piece of paper Begin with a strong thesis statement Introduce your main idea, explain your subject, and end with a summary of your findings Revising and Proofreading Replace the underlined words in Armando’s sentence with precise verbs, nouns, and adjectives Rewrite the sentence on the lines below it The Sun heats Earth, causing water from the seas to dry and form clouds Now revise and proofread your... A decrease in resources can lead to an increase in Summarize the Main Idea 19 What is the difference between a food chain and a food web? 20 Chapter 1 • Earth’s Ecosystems Reading and Writing in Science Use with Lesson 4 Earth’s Food Chains, Webs, and Pyramids © Macmillan/McGraw-Hill within a community Name Date Vocabulary Earth’s Food Chains, Webs, and Pyramids a carnivores e food chain i producers... molecules Plants store energy from the Sun in their cells 10 Chapter 1 • Earth’s Ecosystems Reading and Writing in Science Use with Lesson 2 Photosynthesis: The Basic Process of Life © Macmillan/McGraw-Hill All organisms perform respiration, Name Date Writing Life in the Deep Read the Writing in Science feature in your textbook Write About It Main Idea Write a report telling how sunlight helps support your... away, and clearly state your purpose for writing Introduce the main idea, and develop it with facts Use supporting details and precise verbs, nouns, and adjectives to describe and explain your subject Do print and online research Summarize your findings at the end of the report Getting Ideas Sometimes you choose your own topic to write about Other times your teacher specifies the topic Underline the... from your print and online research Chapter 1 • Earth’s Ecosystems Reading and Writing in Science Use with Lesson 2 Photosynthesis: The Basic Process of Life 11 Writing Name Date Drafting A good report begins with a thesis statement that focuses the topic and tells readers what to expect Circle the thesis statement that is the better way for Armando to begin his report I do not like to think about what... Earth’s Ecosystems Reading and Writing in Science Use with Lesson 5 Earth’s Cycles for Life 23 Outline Name Date What is the nitrogen cycle? 10 Nitrogen is needed to make for the growth of muscles, skin, bones, blood, plant cell walls, and internal organs 11 Lightning can change the nitrogen in the atmosphere into a(n) compound 12 Nitrogen-fixing live in the roots of beans, peas, and peanuts and can extract... temperature, cooling skin and carrying excess away from your cells 10 When a plant does not receive enough water, the leaves and stems become weak, and the plant Chapter 1 • Earth’s Ecosystems Reading and Writing in Science Use with Lesson 1 Introduction to Earth’s Ecosystems 3 Outline Name Date Why is soil important? 11 Soil supplies plants with the water, , and air that they need to grow 12 As plant and animal... chain 9 The remains of plants and animals that are not eaten break down into used by producers Chapter 1 • Earth’s Ecosystems Reading and Writing in Science Use with Lesson 4 Earth’s Food Chains, Webs, and Pyramids 19 Outline Name Date What is a land food web? 10 Food webs show the roles and relationships among all of the in an ecosystem 11 Land have flat-edged teeth for tearing plant materials 12 Carnivores . 2 Reading and Writing in Science Photosynthesis: The Basic Process of Life Life in the Deep Read the Writing in Science feature in your textbook. Write About It Main Idea Write a report telling. Begin with a strong thesis statement. Introduce your main idea, explain your subject, and end with a summary of your findings. Revising and Proofreading Replace the underlined words in Armando’s. Chapter 1 Reading and Writing in Science Outline Introduction to Earth’s Ecosystems Use your textbook to help you fill in the blanks. What is an ecosystem? 1. In an ecosystem living things work