Nature

123456
Across
  1. 1. to jump over something while you are running
  2. 4. a large mass of ice that moves slowly
  3. 6. to reduce or destroy something gradually
Down
  1. 2. an animal that produces eggs and uses the heat of the sun to keep its blood warm
  2. 3. a line on the surface of something where it has broken
  3. 5. hot liquid rock that comes out of a volcano
  4. 6. the fact of soil, stone, etc. being gradually damaged and removed by the waves, rain, or wind