the mutation accumulation hypothesis for the evolution of senescence proposes that for late-life traits, selection cannot purge deleterious mutations. What assumptions does this hypothesis make

In what for do plants utilize nitrogen? why do they need nitrogen?

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.