As a research reported, until July 29 2019, humans had used up natural resources such as water, soil, and clean air for the full, according to the Global Ecological Footprint Network. At the current rate of depletion,1.75 natural resources produced by the Earth can meet demand. What would the earth look like if there were no humans on the earth?
There are no man-made work, no city, no house, no railway, no bridge, no electricity, no wind and no solar power. All animals and plants follow the rule of natural selection, survival of the fittest, in the competition. The animals at the top of the food chain that have been wiped out by humans may still roam the earth, and many of the animals and plants that have been eaten as food at the top of these chains may be extinct. Without humans on earth, will a new civilization evolve?
The birth and evolution of life is not only the inevitable result, but also full of contingency. Inevitability is reflected in such conditions as the atmosphere, sunlight, temperature, water resources and so on, which must bring up the ecological phenomenon of the present diversity on the earth.