Assertion: season | /r/HasProperty | marked by change
Facets:
value: in the amount of sunlight
type: OTHER
value: in temperate and polar regions
type: LOCATION
Source sentences:
text: In temperate and polar regions, the seasons are marked by changes in the intensity of sunlight that reaches the Earth's surface, variations of which may cause animals to undergo hibernation or to migrate, and plants to be dormant.
text: In the temperate and polar regions, seasons are marked by changes in the amount of sunlight, which in turn often causes cycles of dormancy in plants and hibernation in animals.