We have evidence from different studies all over the world
Many of the skeletons have associated age, sex, ancestry, and cause of death data. Individual remains with known biological information are especially valuable references. Forensic anthropologists have used these skeletons to develop standards for determining sex, age and ancestry in unknown remains
More variation assists with survival. It increases the chance that at least some offspring of a parent survive.
Explanation:
Overall, 25% of California adults named water shortages and drought as the most important environmental issue currently facing the state. Not far behind, 17% named wildfires, followed by 13% who cited climate change and 6% who named air pollution.
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