How well the heart works depends on

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

Boiling water is an example of physical change. true or false