G7 Segment 1 Vocabulary Practice (1.1 - 1.4)

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Across
  1. 2. A system comprising all the biotic and abiotic factors in an area and all the interactions among them
  2. 6. The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically
  3. 10. A source or supply of energy that can be used to generate electric power to meet people’s needs
  4. 11. Not replaceable by natural means within a short period of time
  5. 12. An organism that gets its energy by feeding on producers in the food chain
  6. 13. A source or supply that benefits organisms
  7. 15. substance A single substance, either an element or a compound, with definite composition and properties
  8. 16. Resources that exist in the environment without human intervention
  9. 19. The layer of gas surrounding a planet that is held in place by gravity
  10. 20. A group of interacting individuals of the same species located in the same area
  11. 21. An animal that eats primary consumers (i.e., other animals that eat plants)
  12. 24. A solid material whose atoms, molecules, or ions are arranged in an ordered pattern
  13. 25. A nonliving thing that affects the ecosystem
  14. 26. A state of matter with definite volume and shape
Down
  1. 1. Replaceable by natural means in a short period of time
  2. 3. Relationships between an organism or population and abiotic factors
  3. 4. Water that collects in cracks and pores in underground soil and rock layers
  4. 5. When an organism depends on a factor for survival
  5. 7. Any natural process that happens to Earth’s surface, such as weathering, erosion, or plate tectonics
  6. 8. When more than one individual or population in an ecosystem relies on the same limited resources
  7. 9. The sum of all living matter on Earth
  8. 14. Biotic Factor
  9. 17. Something that is needed by organisms and is not infinite in its abundance in the environment; if it is exhausted, then the organisms that need it cannot survive
  10. 18. A number written below and to the right of a chemical symbol that shows the number of a specific type of atom present
  11. 19. The smallest particle of an element; made of electrons, protons, and neutrons
  12. 22. A self-contained living thing
  13. 23. Anything that has volume and mass