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The concentration of disolved salts in water
Not derived from living organisms
Organisms that break down dead or decaying organisms
A cold-blooded animal distinguished by having an aquatic gill-breathing larval stage followed by a terrestrial lung-breathing adult stage
Forests that are dominated by trees that lose their leaves each year. They are found in areas with warm moist summers and mild winters
An animal or person that eats food of both plant and animal origin
Connect with each other
A roll or function of an organism or species in an ecosystem
Type of forest characterized by cone bearing needle-leaved trees
A luxuriant dense forest rich in biodiversity found typically in tropical areas with consistently heavy rainfall
A biological community of interacting organisms and their physical environment
Diverse group of aquatic organisms that have the ability to conduct photosynthesis
Diverse collection of organisms that live in the water column of large bodies of water and are unable to swim against a current. They provide a crucial source of food for many large aquatic organisms such as fish and whales
The weather conditions prevailing in an area in general or over a long period
A barren area of land where little precipitation occurs and consequently living conditions are hostile for plant and animal life
An area of low-lying land that is flooded in wet seasons or at high tide and typical remains waterlodged
The plants of a particular region habitat or geological period
All of the animal life of any particular region or time
Of, on, or relating to the earth
An organism that generally obtains food by feeding on other organisms or organic matter due to lack of ability to manufacture own food
Characterized as having grasses as the dominant vegetation. Trees and large shrubs are absent. Temperatures vary more from summer to winter. The amount of rainfall may be less.
A larger natural occurring community of flora and fauna occupying a major habitat
The area of a sea bed around a large landmass where the sea is relatively shallow compared to the open ocean
Interaction between two different organisms living in close physical association typically to the advantage of both
Organisms that make their own food
The process by which green plants and some other organisms use sunlight to synthesize food from carbon dioxide and water
The tidal mouth of a large river, where the tide meets the stream
The outline of a coast
An animal that feeds on flesh
An animal that naturally preys on others
Relating to water
A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
A vast flat treeless arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen
An animal that is hunted and killed by another one for food