When both organisms benefit from the association

What type of symbiosis?  

Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

When one organism is benefited and the other is unaffected. 

When an organism benefits at the expense of the host.

What type of symbiosis?

This is a tick on a human

What type of symbiosis?

The stork uses it saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.

Snakes and lizards both hunt the same prey, but they hunt at different times. This reduces ______.

When two organisms are trying to acquire or get the same resources.

A lion kills and eats a zebra. This is an example of

What factor would cause animals of the same species to begin competing with one another?

In a certain ecosystem, there is a population of lions that feed on zebras. If there is less food for the zebras for several years, what will most likely be the result for the lion population?

A type of symbiosis in which one species benefits and the other is killed . . .