Across
- 2. – Exploding star
- 5. – Season when flowers bloom
- 8. – Nerve cell
- 10. – Middle value in a dataset
- 11. – Flat elevated land
- 15. – Disease-causing agent
- 17. – Mutual species relationship
- 18. - Opposite of proton
- 19. - winter’s white blanket
- 20. – River mouth sediment deposit
- 23. – Narrow water passage between two islands
- 24. – Number divisible only by 1 and itself
- 25. _ The study of living thing
Down
- 1. – Half of diameter
- 3. - vast body of saltwater
- 4. - Shape with 180° total angles
- 6. – Simple sugar
- 7. - Earth's natural satellite
- 9. – gradual soil loss
- 12. – Rocky celestial body
- 13. – Natural home of an organism
- 14. – fast moving star with tail
- 16. – Treeless Arctic land
- 21. – Protein catalyst
- 22. - science of star and beyond