Virsues are NOT considered to be alive. 

Competition occurs when two species are attempting to use a resource in short supply. 

The rate at which a population will increase when there are no limits on its rate of growth is the 

Species that are occupying the same niche and resource partition to avoid competition are 

Look at the image below. What level of classification is indicated by the #2? hierarchy2.png

What is the name of the image below? foodchain1.png

Predators control prey populations but prey populations do not control predator populations. 

What is the name of the image below? food web.png

These organisms are examples of ___.  lichens.png

If 1000 Kcal are available to the rabbits, how much energy is available to the bird? food pyramid.png