Across
- 4. is anything that is not longer needed in the environment
- 7. living creatures that walk with four or more feet
- 9. with small green leaves
- 12. The plants of an area or a region
- 13. a white pillow flying in the air
- 14. when irrupts lava is visual
- 15. is the transfer of pollen grains from the anther to the stigma of a flower
Down
- 1. birds make a nest in it
- 2. something that is edible and grows in trees
- 3. the environment of an animal or person
- 5. has a transparent color in liquid form
- 6. is the getting rid of materials
- 8. the moisture that falls from the sky
- 10. treat or process (used or waste materials) so as to make suitable
- 11. the natural environment that cause adverse change.