Soil degradation is primarily attributed to:
A. wildfires, surplus soil organisms and dense vegetation.
B. poor agricultural practices, overgrazing and deforestation.
C. erosion, excessive tillage and coastal location.
D. exhaustion of parent material, severe climate and leaching.
E. heavy rainfall, agroforestry and crop rotation.

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

How does friction with the atmosphere affect the speed of an artificial satellite

What type of weather does tropical continental air bring in summer? hot and cloudy cool and sunny hot and sunny cool and cloudy