According to the figure for oppossums Birth Age (months) 0 Energy source: Energy used for: Baby Juvenile Maturity Adult 2nd litter (7 pups) Killed by predator 1st litter Independence (8 pups) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Mother Gathered by self Growth, metabolism, and repair Metabolism, repair, and reproduction delayed maturation = longer growth = larger litters early maturation = shorter growth = larger litters early maturation = shorter growth = fewer litters delayed maturation = longer growth = more litters

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Abiogenesis