Which is an example of a population?

Question

all the squirrels in North America and Europe
all the species of organisms in one state
all the rose bushes around the world
all the sugar maple trees in a state park

Answer 1

http://www.google.com/#q=example+of+a+population

Answer 2

all the sugar maple trees in a state park becomes a population of that state.(live in a particular geographical area and which shows inter breeding)