Across
- 4. where we get our oxygen from
- 5. plants take this in, we breathe this out
- 6. comes from the clouds - rain, sleet, snow, hail
- 7. water vapor turns into water, like a cloud
Down
- 1. when plants make their food and get energy from the sun
- 2. scientist that studies weather and tells the forecast
- 3. 21% of our atmosphere as this, we need it to survive
- 8. 78% of our atmphosphere has this