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Across 3. a __________ is a break or crack in the Earth's lithosphere along which the rocks move (Fact 131) 4. The _______ part of an environment is all of the living organisms that live together and interact with each other. (Fact 143) 7. _________ rock forms when small pieces of material are compacted and are cemented together (Fact 105) 9. A ________________ is a mountain that has a crater or vent through which lava, rock fragments and hot gases are being erupted from Earth's crust (Fact 138) 12. An ______ is a living thing (Fact 139) 13. An ___________ consists of all the living things in an area, along with their nonliving surroundings (Fact 142) 16. The ________ is Earth's solid, rocky outer layer (Fact 115) 18. __________ rock forms when magma, lava or pyroclastic material cools and solidifies (Fact 104) 20. the largest mass extinction in the history of life on Earth took place at the end of the _____ Era (Fact 91) 22. _________ Time accounts for more than 80% of geologic time (Fact 88) 23. Earthquakes occur mostly along faults near the edges of _____ ______ (Fact 133) 24. The _______ Era is known as the Age of Dinosaurs (Fact 94) 25. The _______ of an earthquake is the point inside Earth where the earthquake begins (Fact 136)

Down 1. Oceans cover two thirds of Earth's _______ (Fact 114) 2. A living thing's place where it lives is called its ________; this is where it obtains all the things in needs to survive (Fact 140) 5. The _______ Era is known as the Age of Mammals (Fact 98) 6. Earth formed about 4.6 billion years ago when ______ pulled swirling gas and dust together (Fact 82) 8. ________ rock forms from the transformation of existing rock types due to heat or pressure (Fact 107) 10. The ________ of an earthquake is the point directly above an earthquake's starting point (Fact 135) 11. The _______ ______ is a tool used to measure the strength of earthquakes (Fact 137) 14. _______ ________ are waves of energy that travel through the Earth (Fact 134) 15. An ______________ is the shaking of the surface of the Earth resulting from the tremendous release of energy in the Earth's lithosphere (Fact 132) 17. ________ is the study of earthquakes (Fact 130) 19. ________ is the study of how living things interact with their environment (Fact 141) 21. The ________ part of an ecosystem includes all of the nonliving components such as soil, water, light and temperature (Fact 144)