Ecology Review

This model represents all possible feeding relationships at each trophic level in a community.

As human populations increase what might happen to the populations of other species

Organisms unable to make their own food, they must consume to get nutrients and energy.

The total organic matter found in a given feeding level is called -

These organisms only eat plants

This is the place an organism lives.

When lava flowing into the ocean cools & forms new land this is what type of succession?

This is the role a species plays in a community. ( way of its life)

Energy moves in only one direction through the trophic levels of an ecosystem.

These coastal bodies of water are partially surrounded by land; fresh water and salt water mix

Life Supporting portions of the Earth composed of air, land, fresh water, and salt water

treeless land with permafrost

A population of organisms rise at an ever increasing rate. Humans are an example of this.

In this food pyramid what organism is at the 3rd trophic level

Something that is living

What is recycled in an ecosystem

How much energy is passed from one level to the next?

this feeding relationship includes a predator and prey

This group of organisms of a species can be found in a particular area at a specific time.

As energy moves through an Ecosystem it is lost as..... what?

A symbiotic relationship - one organism benefits & the other organism is not helped or harmed.

The Toad in this food web is what

After a forest fire the community of organisms inhabiting the area gradually change.

The scientific study of interactions between organisms and their environments

A species that occupies and lives in an area first.

Something that is not living

If there is 10,000 units of energy at the lowest level of this pyramid, how much at the owl?

This determines the survival of an organism. It is the range in which they can survive.

large community covered with grass and small plants, usually experience a dry season