(a) Desert Ecosystem

(b) Grassland Ecosystem

(c) Mountain Ecosystem

(d) Marine Ecosystem

(a) 1,000 degrees Celsius

(b) 2,000 degrees Celsius ✅

(c) 1,200 degrees Celsius

(d) 2,600 degrees Celsius

(a) Air

(b) Fossil Fuels ✅

(c) Forests and wildlife

(d) Solar energy

(a) USA

(b) Venezuela

(c) Russia

(d) Saudi Arabia

(a) Ionosphere ✅

(b) Troposphere

(c) Stratosphere

(d) Ozone layer

(a) Soil quality improves significantly, preventing the depletion of soluble nutrients by the trees.

(b) The soil remains largely unaffected due to its inherent richness and depth.

(c) Clearing interrupts the crucial nutrient cycle, resulting in soil leaching.

(d) The soil stabilizes and becomes conducive to excellent grain production.

(a) 2%

(b) 3.7%

(c) 7%

(d) 5.6%

(a) Mediterranean regions

(b) Temperate regions

(c) Equatorial regions ✅

(d) Tropical mountain areas

(a) Erosion

(b) Corrosion

(c) Compression

(d) Abrasion

(a) Winter ✅

(b) Summer

(c) Spring

(d) Autumn