Answer:
Birthdate vs death rate
Explanation:
Birthdate is the day someone was born. Death rate is the amount of people that died in a period of time
The birth rate of a country, community, etc., refers to the number of births that occur per thousand people, per year. Similarly, the death rate refers to the number of deaths per thousand people, per year.
i think it is friction bcs gravity helps an abject move and friction causes it to slow down
B. Esca
I believe the answer is metabolism...
