energy, sun, inexhaustible

Daniela B. (Bulgaria)
16 words 1 learner

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Full list of words from this list:

words only definitions & notes
  1. energy
    forceful exertion
  2. sun
    the star that is the source of light and heat for the planets in the solar system
  3. star
    a celestial body of hot gases that radiates energy
  4. inexhaustible
    incapable of being entirely consumed or used up
  5. efficient
    being effective without wasting time, effort, or expense
  6. ecology
    the environment as it relates to living organisms
  7. nature
    the physical world including plants and animals
  8. world
    the 3rd planet from the sun; the planet we live on
  9. Earth
    the 3rd planet from the sun; the planet we live on
  10. water
    compound that occurs at room temperature as a clear liquid
  11. living
    pertaining to living persons
  12. temperature
    the degree of hotness or coldness of a body or environment
  13. system
    a group of independent elements comprising a unified whole
  14. defend
    protect against a challenge or attack
  15. sustain
    lengthen or extend in duration or space
  16. photosynthesis
    formation of compounds in plants aided by radiant energy
Created on 八月 22, 2009 (updated 八月 22, 2009)

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