Having a less diverse ecosystem makes it more vulnerable because animal's diets become limited and let's say one species gets wiped out, it leaves everything else with even less food.
The Scope of Systems Philosophy. As a philosophical endeavour Systems Philosophy is concerned with the classical purposes of philosophy, namely to: Clear up confusions in our concepts and ways of thinking (logic and analysis); Reflect on the nature of knowledge and how we can obtain it (epistemology);
Water, wind, gravity, and ice because they wear away or break up rocks, sediments, and soil from the Earth's surface.