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group or organic hydrocarbons, having single bonds between carbon atoms.
the part of the Earth's hydrosphere that is made of frozen water.
large deposits formed from the excrement and bodies of seabirds. Often found on islands.
a temperature scale with zero at absolute zero 0 K = 273 0C.
the process in radioactive decay where daughter nuclei continue to decay until non-radioactive...
ionisation chamber in which single ionising events can be detected.