It is the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).
D all of the above applies to the functions of the nervous system.
Answer:
They are not concerned about their future health cause they are thinking they are probably healthy right now and they don’t realize that that can change in the future. If u are fit right now then that means u wont struggle with future physical fitness activities.
Explanation: