Immigration occurs when individuals are added to a population

• true
• false

Emigration means to "move out"

• true
• false

A population increases when_________________

• individuals die
• individuals are born
• individuals emigrate

The _________________ is maximum number of individuals of one species that the environment can support. 

• emigration
• limiting factor
• carrying capacity
• immigration

A part of the environment that keeps a population's size at a level below its full potential is called a _________________ .

• cooperation
• limiting factor
• competition
• carrying capacity

Limiting factors can be biotic or abiotic factors 

• true
• false

When two or more individuals or populations try to use the same limited resource (e.g. food, water, shelter, sunlight) it is called_________________

• cooperation
• symbiosis
• competition
• limiting factor

___________________ occurs when individuals work together.

• immigration
• cooperation
• carrying capacity
• competition

Individuals joining a population is an example of ______________

• emigration
• immigration

A part of the environment that prevents a population from growing to large is a/n______________

• abiotic factor
• biotic factor
• limiting factor