Agents of weathering

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Across
  1. 2. I grow in caves and I’m eaten but be careful sometimes I’m poisonous
  2. 5. i rain I splash you’ll find me everywhere
  3. 7. you are me
  4. 9. I graze I’m on a farm and I’m in a house
Down
  1. 1. everything breathes me you’d be dead without me
  2. 3. I’m the most common frozen material
  3. 4. I eat sunlight and carbon I’m everything you grow
  4. 6. im a dangerous chemical I melt Everything I touch
  5. 8. i season your food and I come from the mountains