Description
A reference table showing chemical elements alongside their common valences and oxidation states.
Original diagram by paulalb.
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Description
A diagram illustrating the basic structures and reproductive parts of a fern.
Original diagram by Colegio Madrigal.
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Description
The main components and functional parts of a standard galvanic electrochemical cell.
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Description
The main exterior components and life-support assemblies of an extravehicular activity spacesuit.
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Description
Cross-sectional profiles and standard map symbols of the four primary meteorological front types.
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Description
A diagram illustrating the internal and external anatomical structures of a sea sponge.
Original diagram by Licencias Madrigal.
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Description
The sequential stages of primary ecological succession from bare rock and pioneer organisms to a mature climax community.
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Description
The key features of an energy profile comparing catalysed and uncatalysed reaction pathways, including activation energies and overall enthalpy change.
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Description
Major geological formations and terrain features found across the lunar surface.
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