Which one of the following is a solution? salt water sugar oxygen chocolate chip cookies

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.