Unit 17 crossword

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Across
  1. 3. In the phrase ? of the fittest.
  2. 4. A type of snake
  3. 7. A pattern of weather over time.
Down
  1. 1. The way something is made.
  2. 2. A good looking dress is ?
  3. 5. Synonym for evening and level of ocean.
  4. 6. To take a territory in war.