Avoid carcinogens (like smoking residues..etc), eat healthy and sleep well in order to maintain a strong immune system
The combination of drought and poor land use practice created the the dust bowl.
Explanation:
Erosion by Ice Ice, usually in the form of glaciers, can erode the earth and create dramatic landforms. In frigid areas and on some mountaintops, glaciers move slowly downhill and across the land. As they move, they transport everything in their path, from tiny grains of sand to huge boulders.
I'm gonna assume you mean a normal little park.
Biotic: Trees. Shrubs. Birds. Grass. Moss. Insects. Worms.
Abiotic: Soil. Rocks. Minerals. Temperature. Water if there's a pond or something.