april crossword

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Across
  1. 3. in greek mythology she is the goddess of the earth, also called terra in roman mythology
  2. 4. this president celebrated the first anniversary of earth day in 1971
  3. 7. christopher nolan film released in 2014 about space travel
  4. 10. holds atoms and nuclei together
Down
  1. 1. 60% of the amazon rainforest is housed within this country
  2. 2. the only natural satellite of earth
  3. 5. colorless, odorless, non-toxic gas used in airships and balloons
  4. 6. the outermost layer of the earth and the outermost side of a slice of pizza
  5. 8. ⊕ is a symbol for what planet?
  6. 9. the celestial body around which the earth and other planets revolve