The living things in an ecosystem - plants and animals

The non-living components of an environment

any ecosystem on land

Overall weather in an area over a long period of time

Physical features of a place

Elevation above sea level

Distance north or south of the equator

A loose mixture of rock fragments, organic material, water, and air that can support the growth of vegetation.

A natural, earthly material that retains its shape and hardens when fired

A mixture of rich soil and tiny rocks

The largest particles found in soil; small stones

organic, dark material remaining after decomposition of living organisms

Silt, clay, sand and decaying plants and animals

Downward movement of minerals and humus in soils

The horizontal layers in the soil

Top layer of soil

A large area containing distinct plants and animals

A biome consisting of aspen, spruce and pine trees

A biome characterized by coniferous forests and extreme variations in temperature and amounts of precipitation

Method of calculating fluid repletion in burn patients.

a biome in which grass is the main vegetation and precipitation is low

difference, variety; a condition of having many different types of forms

The diversity of life forms in an environment.

A term that typically describes a species that no longer has any known living individuals.

refers to an organism's shelter and food

Species that are at danger of becoming extinct

Which two conditions likely would produce the least humus in the soil of a region?

Humus is composed of remains from plants and animals. Which two conditions likely would produce the most humus?

Which of the following lists of types of soil indicate in order the depth of topsoil from greatest to least ?

The biome labeled D is