Across
- 2. - the region of the upper atmosphere where temperatures increase continuously as you get farther away from Earth.
- 4. - against; opposite
- 7. - the passage of water by a plant through membranes or pores in its leaves, stems, or flowers.
- 8. - across; through
- 11. - any substance foreign to the body that causes an immune response.
Down
- 1. - the process of turning from a liquid to a vapor (gas) without reaching the boiling point.
- 3. - located, taking place, or traveling among the stars.
- 5. - against; opposite
- 6. - protein produced by the body’s immune system when it detects harmful substances called antigens.
- 9. - between; among
- 10. - heat; warm