Water, rocks, air, and temperature are all...

The largest popluation size a given ecosystem can support

Disease, hunting by humnas, and scarcity of food are all

Limiting factors determine an area's carrying capacity becuase animals need these to survive. 

After one species in an ecosystem disappears, the other species in the ecosystem can become

An organism that eats only plants is a

An organism that eats a variety of animals, fruits, and vegetables is 

Herbivores, carnivores, and omnivores are all

A bird eats a worm. This is the prey.

Organisms that make their own food from sunlight are called

This is a triangular diagram that shows an ecosystem's loss of energy. 

In a food web, arrows point to the animal that is

If an arrow in a food web points from a rabbit to a hawk, who is the predator?

A bug eats grass. A bird eats the bug. This is an example of a 

Wolves prey on elk. In order for the wolves to survive, how many elk are needed compared to wolves? 

An example is asian carp.

An example is plastic or oil in the ocean

This is a problem that includes a massive increase in the number of humans on the planet

An example is when forests are cleared for farming

An example is people harvesting too many tuna from the ocean

This is the variety of living things in an ecosystem

When two organisms interact with each other it is called

As human population increases, what happens to the number of extinctions?

In order to maintain a healty ecosystem and ensure our long term survival, we must maintain

An organism that has a much larger than usual effect on it's ecosystem is a 

What kind of elk do wolves kill first?