Lesson 11.5 · Unit 11, Block 5
22 questions on this block. Tap an answer and it moves on by itself — correct answers advance immediately, misses hold a few seconds so you can read why.
Click the buttons and watch what changes.
More greenhouse gas traps more heat. CO₂ rises when it is released faster than plants and oceans remove it.
Part 1The greenhouse effectPart 2Where the extra CO₂ comes fromPart 3Reading CO₂ graphsPart 4Effects on climate and living thingsPart 5Putting it together