Examlex
An ampule can be used only once and the remaining,unused drug must be discarded because it contains no preservative.
Ultraviolet Radiation
A form of electromagnetic radiation with wavelengths shorter than visible light but longer than X-rays, capable of causing skin burns and can play a beneficial role in vitamin D production.
Ozone Layer
The ozone layer is a stratospheric layer rich in ozone, which protects life on Earth by absorbing the majority of the sun's harmful ultraviolet radiation.
Organic Life
Refers to life forms that are based on carbon compounds, which includes all living organisms on Earth.
Mutation
A change in the DNA sequence of an organism that can lead to differences in physical traits or susceptibility to certain diseases.
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