#6 ISTEP Review 4/19/17

What nutrient cycle is represented in this image?

___ is a pesticide that was widely used in the US prior to 1972 to kill insects.

A major contributor to Carbon Dioxide in the atmosphere is

Biome with dense forests of coniferous trees. Mild summers, long & bitterly cold winters.

The __ cycle is important because living organisms need this element to make DNA/RNA.

Animals that eat the dead carcasses of other animals.

What nutrient cycle is represented in this image?

A model showing all of the complex feeding interactions in an ecological community.

The amount of living material at each trophic level.

When the burning of fossil fuels release nitrogen and sulfur into the air, they can return as

Invasive species not yet in Great Lakes- but are close. Large fish that eat ALOT of plankton.

Animals that eat both plants (producers) and animals (consumers).

Common forms of this are smog, acid rain, greenhouse gases, and particulates.

Invasive species harm native species because they increase ___ and decrease ___.

__ AND __ are 2 elements that are vital nutrients in aquatic ecosystems.

The area of land inhabited a population

A biological aspect of a process in the environment must always involve a ___ thing.

When humans split ecosystems into pieces by developing land- decreases population sizes.

The ability of an organism to survive and reproduce under a range of environmental conditions.

Organisms such as bacteria and fungi that chemically break down organic matter.

Branch of biology that studies interactions between organisms and with their environment.

Biome with small and stunted plants & permafrost (layer of permanently frozen soil).

Lowest level of ecological organization where there are living and nonliving things interacting

What nutrient cycle is represented in this image?

Invasive species in the Great Lakes that sucks the body fluid out of large fish(salmon & trout)

Invasive species in Great Lakes that filter plankton out of the water, reproduce very fast.

Producers keep 100% of the sun's energy. How much energy will secondary consumers receive?

DDT led to a decrease in bird populations that ate fish- it built up in their tissues and ...

Invasive species in Great Lakes that eat native fish eggs- very aggressive, from Eastern Europe

The number of individuals per unit area.

The predictable changes that occur in a community over time.

Any factor that controls the growth of a population.

Type of organism found at the bottom of an ecological pyramid & beginning of a food chain

Resources such as wind, water, & air that can be replaced in a relatively short amount of time.

Each step in the transfer of energy in a food web.