21. and wool clothes are durable and fire - resistant. would be the next best option. (1 point) *\nleather…

21. and wool clothes are durable and fire - resistant. would be the next best option. (1 point) *\nleather, cotton\nsynthetic, cotton\npolyester, synthetic\n22. materials can melt and cause severe burns. do not wear them when welding! (1 point) *\nwool\nleather\ncotton\nsynthetic\n23. boots should be worn when welding. (1 point) *\nwool\nrubber\nleather\nplastic

21. and wool clothes are durable and fire - resistant. would be the next best option. (1 point) *\nleather, cotton\nsynthetic, cotton\npolyester, synthetic\n22. materials can melt and cause severe burns. do not wear them when welding! (1 point) *\nwool\nleather\ncotton\nsynthetic\n23. boots should be worn when welding. (1 point) *\nwool\nrubber\nleather\nplastic

Answer

Brief Explanations:

  1. Leather and wool are known for being durable and fire - resistant.
  2. Synthetic materials have a lower melting point and can cause burns when exposed to high heat like in welding.
  3. Leather boots are suitable for welding as they are heat - resistant and durable.

Answer:

  1. leather, wool
  2. synthetic
  3. leather