A habitat’s carrying capacity for a population can change over time. For example, a forest may be able to support a certain number of bears, but when the trees are cut down and the land is paved over,...

A habitat’s carrying capacity for a population can change over time. For example, a forest may be able to support a certain number of bears, but when the trees are cut down and the land is paved over, the carrying capacity drops (probably to zero). What other factors could cause the carrying capacity of a habitat to change? How has Earth’s carrying capacity for humans changed over time? Does technology influence how many people Earth can support?