Ecosystems and Biomes

The energy role of a grizzly bear is that of a(n) ___ because it cannot make its own food. 

Certain bacteria change nitrogen gas into a usable form on a process called _____. 

The many overlapping food chains in an ecosystem make a(n)

Which biome receives less than 25 centimeters of rain per year? 

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

Water vapor turns into droplets of liquid water in the process of_____.

Water from a lake changes to the gas state in the process of _______.

Mountains and deserts that are difficult for organisms to cross are ____ barriers to dispersal.

Which of the following is NOT an example of dispersal?

The ___ biome receives less than 25 cm of rain a year and may have large temperature shifts.

Oak, maple & beech trees which lose their leaves each year are found in boreal forests

A diagram called a(n) ___ shows how much energy is available at each level of a food web.

The part of the open ocean that receives light for floating algae to carry out photosynthesis. 

The neritic zone over the continental shelf if part of the ____ ecosystem.

Consumers that eat both plants and animals.

Producers release the gas nitrogen as a product of photosynthesis.

Second-level consumers may be either carnivores or omnivores. 

The movement of Earth's continents has affected how species are distributed. 

Rivers, ponds, and lakes are part of freshwater ecosystems. 

Dandelions are an exotic species of the US because they were brought over from Europe.

The deciduous forest biome is typically populated by many grasses, shrubs and trees.

The ocean water is completely dark throughout

The very slow movement of the continents is called

Small, light organisms such as baby spiders can be dispersed by ______.

A bird eating berries and depositing the seeds in this wastes is an example of____.

In which process do producers use carbon from carbon dioxide to produce other carbon molecules

The step in the water cycle which water vapor becomes liquid water is

Which of these three consumers is a herbivore?

The ocean prevents organisms from dispersing throughout the world. The ocean is an example of

The energy role of the first organism in a food chain is always a (n) ______.

Temperature and precipitation determine an area's ___, which can limit dispersal of organisms.

Producers use carbon in the form of gas _________to make sugars ans starches. 

A diagram that shows the amount of energy that moves from one feeding level to another

Organisms that capture energy of sunlight to make food are called omnivores.

Organisms that were brought by humans from one part of the world to another are examples of

An organism that makes its own food is called a 

The study of where organisms live is called

The least amount of energy is available at the ___ level of an energy pyramid.

A group of land ecosystems with similar climates and organisms is called

The distribution of species has been affected by the slow movement of Earth's continents called

Place with similar ___ tend to have species that occupy similar niches.

Which of theses is NOT an example  precipitation?

The available energy decreases at each feeding level compared to the level below.

Bacteria and fungi are know as ___ because they break down the remains of organisms. 

In which process does molecules of liquid water absorb energy and change into the gas state

What do producers release as a result of photosynthesis?

Continental drift resulted in kangaroos and other unique species developing in 

Ponds and rivers are two types of 

An organism that eats only plants is a ________ consumer.

Vultures, which feed on the bodies of dead organisms are

Some bacteria that fix nitrogen live in bumps on the roots of certain plants. Name the bumps?

Rain, snow, sleet and hail are examples of transpiration. 

What area (s) are not part of any major biome?

Which biome is extremely cold and dry?

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

Which ecosystems is found where the fresh water of a river meets the salt water of the ocean?

The typical weather pattern in an area over a long period of time is called

The first organism in a food chain is always a 

The soil that is frozen all year in the tundra is called...

A large variety of plants grows in tropical rain forest because