Yet life persists. Moreover, fossils that have been discovered are practically identical with forms living today. Only a minor variation appears here and there, much as there are slight variations in particular animal and plant kinds now in existence contemporaneously.

How is this amazing ability to survive possible, since life seems so fragile and since the mechanism of reproduction depends on microscopic cells and is so exceedingly complex? Even though intricate almost beyond belief, the reproductive process is actually so stable that the majority of living creatures possess all their faculties and functions. For example, most babies are able to live after being born and nearly all have normal eyes, arms, legs, internal organs, mentality and good use of all these endowments.

All this testifies to the wisdom and glory of the Creator. The hardiness and persistence of life through all the centuries of time and circumstance also point to his purpose to have the earth continually teeming with life to time indefinite.

Earth Always to Be Filled with Living Things

All this reveals the hardiness and persistence of life. It explains why disease epidemics can wipe out most of a population, yet leave some untouched due to their having a natural resistance to the particular disease germs involved. Furthermore, as to mankind, we see that, despite the ravages of nearly 6,000 years of sin, well-formed, handsome men and women, with brilliant minds, are still being produced.

Now, however, we behold man ruining his own environment. Health hazards of all kinds are brought about by food additives, by pollution of food, water and air, and the threat of death from crime or war increases daily. Man is literally ruining the earth, and likely, if allowed sufficient time, would make the earth uninhabitable.

But the Creator purposed earth to be a place perpetually inhabited by men and women, as well as by animals. God says he will step in at this time when earth-wide desolation threatens and will “ruin those ruining the earth.”​—Rev. 11:18.

So, just as life has always existed, in that Jehovah the Source of life has always lived, he purposes that life will always exist on this planet.​—Ps. 90:2; 36:9.