Their bodies became subject to death. Sin, the Bible says, has brought death into the world. Thinking of earthquakes and such, the rest of the world of nature was no longer perfect because of their sin. Thorns and thistles started to grow, making it more difficult to raise crops. Childbirth, which is still a marvel, became a painful part of nature for a woman.
People today talk about polluting the environment.
The greatest environmental pollution of all time came when Adam and Eve sinned. After God in His goodness hovered over the dark waters and brought order out of chaos, mankind dropped it and turned back to that chaos. That's why you might think God drops it every once in a while. He's not dropping it. By our sins we've become unruly and sin has made nature unruly, too.