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Human impact on the environment

Grade 9 · Science · Free lesson

Hi there! I'm Studyfin, your tutor. Let's explore how our daily choices shape the beautiful planet we call home!

Every day, humans interact with the Earth. We build cities, grow food, and use energy. These actions can help or hurt our ecosystems.

To understand our impact, we must interact with sources. When you read about science, try annotating. This means highlighting key facts or writing quick notes in the margins to help you organize your thoughts.

Important! ✎

When you write an informational essay about the environment, use multiple paragraphs. Start with an introduction, explain your evidence in the body paragraphs, and finish with a strong conclusion.

✏️ Worked example

Imagine you are reading an article about how plastic pollution harms ocean food webs. Show how to interact with this source and outline a short informational essay about it.

  1. Read the article actively. Highlight key details like 'microplastics block sunlight for algae' and write a margin note: 'Algae is the base of the food web.'
  2. Organize your notes into main ideas. Group the facts into two categories: how plastic gets into the ocean, and how it affects marine life.
  3. Draft your introduction paragraph. Start with a hook about ocean health and state your main idea: human plastic waste disrupts marine ecosystems.
  4. Write your body paragraph. Use your notes to explain that microplastics block sunlight, which stops algae from growing and starves fish.
  5. Write your concluding paragraph. Summarize how reducing plastic use can protect ocean food webs for the future.
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