Answer:

1. cause: overgrazing, the buildup of salt in irrigated soils,

effect : dispersion of solid particles in the atmosphere

2. cause: Causes Soil Salinization?

dry climates and low precipitations when excessive salts are not flushed from the earth;

effect: productivity changes, an increased risk for less tolerant species and an increase of plant pests and/or diseases

3. cause : Fires

effects: Increase in Global Warming.

4. cause : Wildfires

effect: Global Warming.