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organisms that use energy from sunlight or from chemical bonds in inorganic substances to make organic compounds
compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body
an organism that obtains energy and nutrients by feeding on other organisms or their remains.
first law of thermodynamics
energy is neither created nor destroyed, but may be converted from one form to another
The smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms; a group of like or different atoms held together by chemical forces
process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches
process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another
the process by which cells obtain energy from carbohydrates; atmospheric oxygen combines with glucose to form water and carbon dioxide
a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
farther the last energy level is from the nucleus, the easier it is to remove the electrons
net primary production
The amount of energy accumulated in plant biomass that is available to the consumers in an ecosystem
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