Despite never having reached beyond the crust, the interior of Earth has been mapped using seismic waves. Describe how seismic waves have
been used to indirectly show that the outer core of the Earth must be a
liquid.

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.

1.75 is the weight of one medium egg

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.