Across
- 2. in biology the most fundamental classification of living things comprising individuals that can breed with on another but not with those of other species
- 6. the dense center of the Earth, made mostly of iron and some nickel
- 9. a system of writing developed by the people of Easter Island
- 10. the curved path in which a planet satellite or spacecraft revolves about another body
- 11. mixture of gases surrounding a planet
- 14. the Sun and the objects that orbit it
- 16. somewhat salty
- 17. an expert in the study of plants
- 18. the force by which a planet or other such body tends to draw objects toward it's center
Down
- 1. an outbreak usually of disease that spreads rapidly afflicting many individuals
- 3. a learned person
- 4. small rocky icy and metallic celestial bodies left over from the formation of the Solar System which can range from a few meters to several hundred kilometers in width
- 5. any celestial body (other than comets or satellites) that revolves around a star
- 7. any of the gigantic carved stone figures found on Easter Island
- 8. any of a vast number of celestial bodies other than the moon visible from earth as points of light in the night sky
- 12. a region of space in which a magnetic force occurs
- 13. degrees of magnification or perspective used to measure time space and size
- 15. a narrative that explains how something came to be