Plural of heterogeneity; multiple instances of being composed of dissimilar elements, parts, or kinds.
Plural form of 'heterogeneity,' from Greek 'hetero-' (different) and '-geneity' (quality of being a certain kind). The '-ties' ending marks multiple instances.
Modern physics discovered that the universe contains vast heterogeneities in matter distribution—some regions packed with galaxies while others are nearly empty voids, explaining why space is so lumpy!
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