Algae

Marine or freshwater plants with no true stems of leaves

Agriculture

Large cultivation of the land

Alpine

of high mountains

Aquatic

Taking place in or one water

Biomes

Geographical areas filled with a major community of plant and animal life.

Climate

Those aspects of the weather such as temperature, rainfall, and light which influence the life of organisms

Community

All the organisms living in a particular area

Coniferous

of cone-bearing trees, such as pines and their relatives

Deciduous

Shedding its leave annually

Decomposition

The process by which organisms cause decay

Desert

Barren, often sandy, area

Ecosystem

All the organisms present in a particular area, together with their physical environment

Grassland

Wide, grass-covered area with few trees

Nutrient

Any chemical that an organism must take from its environment in order to survive

Precipitation

Condensation of water vapor

Predator

Animal that preys on another organism

Savannah

Grassy flat land in hot regions with few trees

Temperate

Climate without extremes of heat and cold

Terrestrial

of or living on land

Tropics

line of latitude 24 degrees north or south of the equator

Tundra

A treeless geographical area here the subsoil is frozen