Organisms Interactions in the Ecosystem

The average year to year conditions of temp and precipitation in a region are referred to as _,

If kestrel eats a mouse that eats grass, the kestrel is a _____.

What is the term for each step in the transfer of energy and matter within a food web?

Mutualism, commensalism, and parasitism are the 3 types of ___.

An organism that uses energy to produce its own food from inorganic compounds is called ____.

All the interconnected feeding relationships in a ecosystem make up a food ______.

Carbon cycles through the biosphere in all of the following processes EXCEPT.

Plants are

Primary succession can begin after

An ecologist who studies several species in an area and how they interact is interested in __.

The first species to populate an area where primary succession is taking place are called ___.

What is the difference between primary and secondary succession?

Consumers that eat both plants and animals are called _____.

Vultures, which feed on the bodies of dead organisms, are __.

The total amount of living tissue within a given trophic level is called the

Anything that limits an organism's ability to live in a particular environment in a ___ factor

What do producers release as a result of photosynthesis?

An ecologist who studies how several species in an area interact is interested in

Carbon dioxide in the atmosphere enters the biotic parts through ______.

Which of the following organisms does not require sunlight to live?

What is the original source of almost all the energy in most ecosystems?

An organism's niche is

A large variety of plants grows in tropical rain forest because ____.

The E.Coli that live in your gut and help break down food are an example of which relationship?

What animals eat both producers and consumers?

The algae at the beginning of the food chain are ______.

Aquatic ecosystems are classified by all of the following EXCEPT

The series of changes that occurs after a disturbance in an existing ecosystem is called

An organism's particular role in its habitat is called ____.

A snake that eats a frog that has eaten an insect that fed on a plant is a ____.

Which biome is extremely cold and dry?

An organism's habitat must provide all of the following EXCEPT

Each of the following is an abiotic factor in the environment EXCEPT

___ is the process of gradual change and species replacement that takes place in communities

In an energy pyramid , which level has the most available energy?

Branch of biology that deals with organisms and their environment is called

The symbiotic relationship between a flower and the insect that feeds on its nectar is

Starfish live in tidal pools or deep in oceans. This is a description of the ___ of starfish.

A symbiotic relationship in which both species benefit is

Which type of pyramid shows the amount of living tissue at each trophic level in an ecosystem?