Earth has a disease called "Homo sapiens".
But as Mars recently said: "Don't worry, you'll get over it."
We are meanwhile nearing a CO level that has only existed once in earth's time, at the end of the
Permian, to Triassic. The ecosystem took around 30 million years to recover back then. While we argue whether mankind has something to do with the current rise of CO levels or not, and telling those damned tree huggers to bugger off, the inanimate rocky ball of earth itself will not have a problem.
That species become extinct also happens without mankind helping, however the scope of plain killing high numbers of animals of all kinds done by mankind (not yet call it extinction, we might still find one or two bornean rhinoceroses somewhere, just not in numbers able to replicate in the future) has become enormous, which is especially true for insects in civilized countries. It is not only companies like
Monsanto, but generally insecticides and defoliage chemicals used e.g. for potato crop has killed so many bees in Germany that we have to import them just to balance the fertilization of agricultural crop.
Regarding global warming and rising CO levels, or all those methanhydrate craters going off recently: whether it is human influence or the sun letting off more energy – you'd suppose maybe at least thinking a bit about it and planning, would be in order? Obviously not.
Earlier this year, the White House proposed slashing funding for the Science Advisory Board by 84 percent. It is not only the US of course, if you look at Russia, or China. Germany is not better, it just isn't big enough to have so much impact. But "we" also have no specialists anymore, all leaving or we just let the technology drop off, like e.g. with seismography. We invented it, made it high tech, and then we just let it being bought off or dropped it altogether.
Putting our heads in the sand and call it all fake news will of course solve the problem. Scientists are all leftist donkeyholes, standing in the way of commerce and financial progress anyway
Seriously coming back to the op, earth's end as a rocky agglomeration of minerals will come when the sun develops into its red giant phase, most probably earth will then just have its atmosphere blown off, melt, and become a gas to be dispersed in space.