Sand
dead creatures
polluted coral reefs will die
REMEMBER...CORAL ARE LIVING
Answer:
Stars live to long to be observed from birth to death
Explanation:
The life expectancy of a star are millions of years compared to that of human thereby making it difficult to study the life path and activities of the stars till the point of extinction. This brought about scientist studying different star with different ages in order to answer their burning question on formation of stars which is called the figuring out process(stellar activity) and this makes it difficult and tedious.
Answer: A sealed calorimeter is a closed system because thermal energy is not transferred to the environment.
A closed system is an isolated system where there is no transfer of energy with its surroundings. Also the system is not subjected to any external force whose source is external to the system.
It would be 3.5m/s^2 East (Or whatever direction you want because it does not specify a direction for you and velocity Needs a direction, or else it would just be a scaler)