4. A natural resource is best defined as any naturally occurring material that is
A. used by people
B. mined from Earth
C. unlimited in quantity
D. left untouched in nature

Why does his teacher ask him to balance the equation by including the correct coefficient

Drug abuse will not lead to physical and psychological dependence. true or false ?

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.