Answer:
"water, air, sunlight, soil, plants, microorganisms, insects and animals. Ecosystems may be terrestrial – that is, on land – or aquatic. Sizes of ecosystems vary; they could entail a small puddle or an enormous swath of desert. Likewise, natural ecosystems can look quite different from one another."
Explanation:
1. C 2. B 3. A 4. D In that order
Tenton Range, The Rocky mountains, the Jackson Hole.
Ice wedging and abrasion
putting trash in the water and piping sewage water in oceans
