Which of the following are ignition sources? Select the 5 answer options that apply.

Static electricity

Lightning

Damp wood

Hotwork (such as welding, cutting, and brazing)

Smoking

Electrical and mechanical sparks

Work clothes

0% 10. use the table to answer the question. which elements would you expect to find mainly in the earth’s core? element density (g/cm3) aluminum 2.7 iron 7.87 nickel 8.9 silicon 2.33 iron and silicon aluminum and silicon aluminum and nickel iron and nickel