Across
- 2. Viruses that infect bacteria.
- 5. A proposed theory that describes cellular life.
- 6. Blue-green algae
- 8. An extinct flightless bird that not much is known about even though it went extinct in modern times.
- 10. Coined by Karl Schimper; a reduction in the temperature of Earth's surface and atmosphere.
- 11. The advancement or evolution of the pelvis and walking on two legs.
- 14. An extinct marine arthropod, first appeared in fossil records about 540 million years ago.
- 15. A taxonomic rank used in the biological classification of living and fossil organisms and is above species and below family.
- 18. A mountain that erupted on the island of Sumbawa in Indonesia, killing 100,000 people.
- 19. A group of people that rivaled with the Neandertals.
Down
- 1. Taxonomic kingdom comprising of all animals, including humans
- 3. The world's first form of advanced technology.
- 4. Kingdom comprising of all living or extinct plants.
- 7. A medicine that inhibits the growth of or destroys microorganisms.
- 9. A programmed cell death.
- 12. Upright man
- 13. A massive ice age that occurred approximately 1.2 billion years ago; also known as Snowball Earth.
- 15. The haploid set of chromosomes in a cell.
- 16. Earliest human fossil discovered by Eugene Dubois in 1891.
- 17. The science of classification
