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  2. Revenue stream - Wikipedia

    en.wikipedia.org/wiki/Revenue_stream

    The key difference to a subscription fee is that this asset still belongs to the company. Common examples include car rentals or hardware leasing. This revenue stream also belongs to the recurring revenue model. The above-mentioned are only some of the most popular revenue streams.

  3. Freshwater biology - Wikipedia

    en.wikipedia.org/wiki/Freshwater_biology

    Freshwater biology is the scientific biological study of freshwater ecosystems and is a branch of limnology. This field seeks to understand the relationships between living organisms in their physical environment. These physical environments may include rivers, lakes, streams, ponds, reservoirs, or wetlands. [1]

  4. Resource (biology) - Wikipedia

    en.wikipedia.org/wiki/Resource_(biology)

    In biology and ecology, a resource is a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. [1] [2] [3] For plants key resources are light, nutrients, water, and space to

  5. Freshwater ecosystem - Wikipedia

    en.wikipedia.org/wiki/Freshwater_ecosystem

    There are three basic types of freshwater ecosystems: Lentic (slow moving water, including pools, ponds, and lakes), lotic (faster moving water, for example streams and rivers) and wetlands (areas where the soil is saturated or inundated for at least part of the time). Limnology (and its branch freshwater biology) is a study about freshwater ...

  6. Glossary of ecology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_ecology

    Also Gause's law. A biological rule which states that two species cannot coexist in the same environment if they are competing for exactly the same resource, often memorably summarized as "complete competitors cannot coexist". coniferous forest One of the primary terrestrial biomes, culminating in the taiga. conservation biology The study of Earth's biodiversity with the aim of protecting and ...

  7. Glossary of biology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_biology

    This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...

  8. Ecology - Wikipedia

    en.wikipedia.org/wiki/Ecology

    Ecology overlaps with the closely related sciences of biogeography, evolutionary biology, genetics, ethology, and natural history. Ecology is a branch of biology, and is the study of abundance, biomass, and distribution of organisms in the context of the environment.

  9. Revenue model - Wikipedia

    en.wikipedia.org/wiki/Revenue_model

    A revenue stream is an amount of money that a business gets from a particular source. [8] A revenue model describes how a business generates revenue streams from its products and services. [9] They are resultantly a key aspect of the revenue model. They are generated through the use of the revenue model components listed in the section above.