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The first law of thermodynamics is a formulation of the law of conservation of energy in the context of thermodynamic processes.

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An omnivore is an organism that eats plants and animals. The term stems from the Latin words omnis, meaning “all or everything,” and vorare, meaning “to devour 

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 carnivore is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other soft tissues)

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An herbivore is an organism that mostly feeds on plants. Herbivores range in size from tiny insects such as aphids to large, lumbering elephants. Herbivores are

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Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients 

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In ecology, a niche is the role or job of a species in a habitat. The word niche comes from the French word nicher, which means “to nest.

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The term "thermal energy" is used loosely in various contexts in physics and engineering. It can refer to several different well-defined physical concepts. Thes

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Energy levels are fixed distances from the nucleus of an atom where electrons may be found. Electrons are negatively charged particles that move around the 

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Tertiary Consumer Definition A tertiary consumer is an animal that obtains its nutrition by eating primary consumers and secondary consumers. ...

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They play a vital role in the food chain, as they control the population and diversity of primary consumers and provide food for tertiary consumers, which are p

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A primary consumer is an organism that feeds on primary producers. Organisms of this type make up the second trophic level and are consumed or predated by secon

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 An energy pyramid is a graphical representation of: A. The number of animals in an ecosystem B. The flow of energy through each trophic level C

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A food chain always starts with a producer, an organism that makes its own food from sunlight or chemicals, such as plants, algae, or bacteria.

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A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains

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 Ecology is the study of organisms and how they interact with the environment around them. An ecologist studies the relationship between living things and their

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Communities form institutions—what we usually think of as large organizations and systems such as schools, government, faith, law enforcement, or the 

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An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. …

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In biology, a species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fer

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A heterotroph is an organism that cannot produce its own food, instead taking nutrition from other sources of organic carbon, mainly plant or animal matter. 

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Autotrophs are organisms that can produce their own food, using materials from inorganic sources. The word “autotroph” comes from the root words “auto” for “self” and “troph” for “food.”

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producer any plant or algae that produces the food and oxygen animals need.  

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an organism that derives the organic compounds and energy it needs from the consumption of other organisms; a heterotroph

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