ScienceActually<p>Although the structural characteristics of the eggshell vary by species, the chicken eggshell has three distinct layers : the mammillary layer, the prismatic or palisade layer, and the external layer.</p><p><a href="https://sfba.social/tags/science" class="mention hashtag" rel="tag">#<span>science</span></a> <a href="https://sfba.social/tags/sciencefacts" class="mention hashtag" rel="tag">#<span>sciencefacts</span></a> <a href="https://sfba.social/tags/chicken" class="mention hashtag" rel="tag">#<span>chicken</span></a> <a href="https://sfba.social/tags/chickeneggs" class="mention hashtag" rel="tag">#<span>chickeneggs</span></a> <a href="https://sfba.social/tags/eggshells" class="mention hashtag" rel="tag">#<span>eggshells</span></a></p>