Science Crossword Puzzle

1. Having no traces of life
4. Angiosperm's reproductive organ
8. Invertebrate's eyespot
9. Insect that produces a gall
10. Award for a fun and unusual scientific achievement
12. Pulls on
13. Adjusts to a new environment
16. Rodent known for its wrinkly pink skin
18. Catchall survey category
20. Teeth also known as cuspids
21. Organisms with offspring
22. Visibly emotional, in a way

1. Receptor-activating substance
2. One who studies the seas
3. Adjust to a standard, as a centrifuge
4. Rock formed from rapidly cooling lava
5. Some reproductive cells
6. Mental health disorder that may be linked to DNA methylation
7. Most frequent value in a data set
11. Name for Mars that comes from the oxidized iron in its soil
14. Meet the expectations of
15. Protective gear for scientists or painters
17. Saponification product
19. Go fast on foot