A Population Pyramid! :)
cells
a line graph
Community
It's called a community.
a community
Its called a habitat, my dear.
Many populations in one area are called a community. This term refers to different species interacting and coexisting in a specific habitat or ecosystem.
There are lots of places called Nelson. They each have different populations.
They are called roman numerals.
A Branching tree
They're not. Prime numbers and square numbers are different things.
Opposite numbers.