weather and nature

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Across
  1. 3. If today is windy, It will apper and cool.
  2. 4. These day make people feel warm and hot.
  3. 5. It falls from the sky drop by drop.
  4. 6. It can lift the roof when it gets stronger.
Down
  1. 1. It grows in a very dense, short clump。
  2. 2. They are tough. They have to go through the wind and rain.
  3. 3. Its changeable.It has many form.
  4. 4. Its white and cold in winter.It fly in sky.
  5. 6. It's round. It appears in the daytime sky every day.
  6. 7. It's round. Every day it appears in the night sky.