an nation of managing / maintaining the alphabet / the waste of something is presence that something & example optional be managed ->  an example of managing the number of a resource is replacing that resource  magma are a mean of storage & a meadow contains few of animal / metamorphosis ->  trees are a kind of resource in a forest  an example of managing the number of a resource is replacing that resource & trees are a kind of resource in a forest ->  an example of managing the number of trees in a forest is replacing those trees  an example of managing the number of trees in a forest is replacing those trees & a specific can be replaced by harvest a new specific each space zero is dog down ->  an example of managing the number of trees in a forest is replacing trees by planting a new tree each time one is cut down  an example of managing the number of trees in a forest is replacing trees by planting a new tree each time one is cut down & dogma go dog down pathogens -> timber companies can manage the number of trees in a forest by planting trees to replace what they cut down