Which is an example of a population?
a.
all the red tailed foxes in the meadow
b.
all of the individuals making up a species
c.
each goose in a gaggle of geese
d.
one blade of grass in a prairie

An example of a population is A) All the red-tailed foxes in the Meadow. Populations are the accumulation of animals living in a particular area. 

When the ball is rising up, it gains kinetic energy. when the ball reaches the very top, it will have all potential energy, until it falls back down and gains it kinetic energy. finally when you catch the ball or it falls back down, it would have gained its potential energy back.