hot-dry summer in different families makes it one of the best examples of convergent evolution. Additionally, annual prevalence is also positively affected by year-to-year variability.

According to some studies, either the trait of annuality or perenniality may be ancestral. This contradicts the commonly held belief that annuality is a derived trait from an ancestral perennial life form, as is suggested by a regarded plant population biology text.

Spatiotemporal scale

Above

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