It starts or speeds up.
Some substances need certain amount of energy in order to react with each other.
Answer:
Travelers prefer to travel in morning because arthat time the temperature ️ is not too hot and they can easily travel here and there without any problem. and they also prefer to travel in night because moderate temperature ....
Answer:
beats per second
Explanation:
Number of heart beats = 
time taken = 
now we have
%
%
now rate of heart beat is defined as number of heart beat per unit of time
so we have


so we have

%
beats per second
Answer:
-2.5 is the answer to your question
Because gravity has been known to define as a force of attraction between things that have mass.