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Environmental Science: Our Changing Planet, a free science course on Tomo

Environmental Science: Our Changing Planet

Explore how Earth's natural systems function and how human activity reshapes our world. From biodiversity to renewable energy, learn to analyze the complex interactions that sustain life.

Like Duolingo, but for Environmental Science: Our Changing Planet. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

A deep dive: 43 levels across 5 sections, about 86 minutes end to end, roughly 17 days at five minutes a day. It moves through The Living World, Land and Water Use, Pollution and Waste, Energy and Climate, and Earth Systems and Cycles. It starts from scratch.

43 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Eco the Earthworm, the guide who teaches the Environmental Science: Our Changing Planet course
Environmental Science: Our Changing Planet
with Eco the Earthworm
43
Levels
5
Sections
5
Min/day
What you'll learn

Key ideas in Environmental Science: Our Changing Planet

  • Energy is lost as heat at every step and cannot be reused
  • Matter like water and minerals stays in the system by changing form
  • The sun is the only reason ecosystems don't run out of energy
  • Distinguishing between the one-way path of energy and the circular path of matter
  • Only about 10% of energy is passed to the next level up
  • Most energy is used for the animal's own survival or lost as heat
  • Higher levels require a massive base of food to survive
  • Applying the 10% rule to explain why top predators are rare
  • Producers convert sunlight into chemical energy
  • One-way path of energy vs circular matter
  • Producers as the entry point for all energy
  • Decomposers break down organic waste
  • The 10% rule and top predators
  • Decomposers unlock nutrients
  • Producers and Decomposers roles
  • Food webs have multiple overlapping paths for energy
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives Environmental Science: Our Changing Planet the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

Where the Energy Goes

What happens to the physical matter, such as carbon and nitrogen, in an ecosystem?

Get it right to open this lesson and 42 more in the app.

Course map

How to learn Environmental Science: Our Changing Planet, step by step

Go in order. 43 short levels across 5 sections, about 1 hour 26 minutes in all, five minutes a day.

  1. 1

    The Living World

    • Ecosystems and Energy Flow
    • Biodiversity and Resilience
    • Population Dynamics
  2. 2

    Land and Water Use

    • Feeding the World
    • Mining and Urbanization
  3. 3

    Pollution and Waste

    • Atmospheric Pollution
    • Aquatic and Solid Waste
    • Human Health and Toxicology
  4. 4

    Energy and Climate

    • Fossil Fuels and Nuclear Power
    • Renewable Energy Solutions
    • Global Climate Change
  5. 5

    Earth Systems and Cycles

    • The Moving Earth and Soil
    • Global Nutrient Cycles
    • Atmosphere and Oceans

5 sections · 14 units · 43 levels. Built to play, not to enroll.

Questions

Questions about Environmental Science: Our Changing Planet

  1. How do I learn Environmental Science: Our Changing Planet?

    Go in order: start with The Living World, then Land and Water Use, then Pollution and Waste, then Energy and Climate, and 1 more section after that. On Tomo that's 43 short levels, about 1 hour 26 minutes in all, played five minutes a day. Start free and play the first level in under a minute.

  2. Is there a Duolingo-style app for Environmental Science: Our Changing Planet?

    Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Environmental Science: Our Changing Planet is one of its free courses, and you can type any other topic to get a course of your own.

  3. Is the Environmental Science: Our Changing Planet course free?

    Yes. Environmental Science: Our Changing Planet is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.

  4. How long does it take to learn Environmental Science: Our Changing Planet?

    43 levels across 5 sections, about 1 hour 26 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.

  5. Do I need any background to start Environmental Science: Our Changing Planet?

    No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.

New

Tomo is in ChatGPT

Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.

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How it's taught

You pick the voice

This course
The Professor

Environmental Science: Our Changing Planet is taught in the Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

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Download Tomo, search Environmental Science: Our Changing Planet, and play your first lesson in under a minute.