"Bloom" Crossword Puzzle

5. to become something different over time as a result of adapting
6. an expert in the scientific study of plants
7. something poisonous that burns or eats its way through almost any material
9. feeding on other living things
13. this type of ecosystem colonizes most habitats on earth, preferring dark, moist conditions
16. allergic to water
18. a colorless poisonous gas with a smell of rotten eggs
19. something of unknown origin

1. the plants that try to take over earth
2. the toxic powdery substance carried in the air that the black plants give off, making everyone allergic to it who breathes it in
3. a flowering plant's unit of reproduction, capable of developing into another plant
4. being sensitive to specific things that can cause severe reactions
6. the singular form of the plural word "bacteria"
8. to be resistant/not affected by something
10. another word for precipitation
11. to choke someone
12. the sickly sweet smell the black plants give off; another word for scent
14. a person's genetic code
15. a cross of two different species
17. a hostile attack of something taking over something else