Rocker apologizes after realizing planned super-concert sponsored by "fossil fuel funding entity"

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8. The amount of water that we have on earth is finite and declining.

The oxygen that we breath was mostly generated millions, even billions of years ago, is largely finite but not declining at a rate that threatens life, that will change as more people inhabit the earth.

As the population of people grow, more oxygen is used up. Oxygen generated by many plants won't be sufficient to supply a large oxygen consuming population, there will be mass dying of people, animals and many plants at some point.

Water is somewhat different. For most of the earth's existence, it has been in a closed loop. It evaporates, rise a certain distance in the atmosphere and come back as rain. The weight of the water molecule has made going higher in the atmosphere impossible because there was not enough heat in the atmosphere to keep evaporate rising. As warming of the atmosphere increases, water molecules are rising higher. At some point, they will rise high enough to get swept away by solar winds - at that point, the closed loop will end and water will become rarer on earth until eventually earth looks like either Mars or Venus (Venus if other heavier gases end up in the atmosphere, Mars if they don't).