Complex sentence: In contrast to eggs of other arthropods, most insect eggs are drought-resistant, because inside the maternal chorion, two additional membranes develop from embryonic tissue, the amnion and the serosa.
Split into simpler sentences: In contrast to eggs of other arthropods, most insect eggs are drought resistant. This is because inside the maternal chorion two additional membranes develop from embryonic tissue, the amnion and the serosa.