Examlex
Which is not one of the extraembryonic membranes that form early in the development of the embryo?
Atmosphere
The layer of gases surrounding Earth, protecting it from extreme temperatures and harmful space energies.
Gaseous Layer
A stratum of the atmosphere composed of gases, such as the ozone layer, which provides protection from the sun's harmful ultraviolet radiation.
Planet
A celestial body orbiting a star or stellar remnant, with sufficient mass for self-gravity and a clear path in its orbit.
Insect Family
A classification level within the scientific taxonomy of insects, grouping together species that share common characteristics and evolutionary ancestors.
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