How do forests maintain the composition of air

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur