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Ecosystems: Part ONe
Cycles and Food Webs, Interactions within a Population, Relationships and INteractions among Members of an Ecosystem
Terms in this set (20)
Made of living and nonliving things that interact in an environment. They may be large or small, terrestrial (land) or aquatic (water). All organisms depends on other living and non-living things for survival.
Nonliving components of an ecosystem that determine the types of organisms that can live in a certain habitat within an ecosystem.
Living, or once living, things that affect the ecosystem.
The element carbon forms the framework for most biological molecules. Therefore, carbon is very important to living things and must be recycled within the ecosystem.
Although the air in our atmosphere is about 80% nitrogen gas, it is not in a form that is usable by most living things.
The water cycle
Earth's water is constantly recycled through the processes of evaporation, condensation, and precipitation. The life processes of transpiration, and cellular respiration also contribute to the water cycle.
What is so important about the sun and the ecosystem?
The Sun is the source of energy for almost all living things on Earth.
What is so important about a food web?
It showsa the feeding relationships within an ecosystem. It consists of many overlapping food chains and is a more complete model of the way energy passes through a community.
What is so important about an energy pyramid?
It represents the amount of energy available at each level within an ecosystem.
How do plants in an ecosystem benefit from the animals in their environment for the recycling of carbon and nitrogen?
The animals give off carbon which is taken in by the plants that is changed into oxygen. The plants also need oxygen for photosynthesis, which they could not live without.
A group of organisms of the same species that live together within a certain area.
Between members of species for basic needs
Animals help each other obtain food, find water, defends themselves against predators, or build a shelter to share.
Refers to the defense of a certain territory by animals of a species to keep other members of the same species out.
More dominant members of a group with other animals at various levels of status below the dominant level.
Made up of all the populations of different organisms living in a particular area.
Living together; any close relationship between two or more different species.
Both organisms benefit
One organism benefits while the other is not negatively affected.
One organism benefits and the other is harmed.
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