What are the four main characteristics of a population

 1.   Population Size and Density: Total size is generally expressed as                the number of   individuals in a population

 2.  Population dispersion or spatial distribution

 3.  Age structure

 4.  Natality (birth rate)

 5.  Mortality (death rate)

question answered by

(jacemorris04)

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.