What is the word?

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Across
  1. 3. ......... is the type of climate of heavy rain and high humidity during the summer in hot Asian countries
  2. 4. The ......... system is a network of organs that help you digest and absorb nutrition from your food.
Down
  1. 1. If a number is not completely divisible by another number, then we are left with a .........
  2. 2. ......... is a literary device that gives human characteristics to nonhuman things or inanimate objects