Pollution from factory discharges and waste dumping. Also biodiversity from deforestation and other natural habitat losses
Convection occurs in fluids (so both liquids and gases, as well as rheids) and is the concerted, collective movement of groups or aggregates of molecules within the above through advection or diffusion or both at the same time. Convection can never take place in solids and is only specific to fluids.
Answer:
According to one estimate, stands of century-old forest now account for only 7% of forest cover in the United States (USDA-FS 2000). Since 1600, 90% of the virgin forests that once covered much of the lower 48 states have been cleared away.
Explanation:
Mount Baker-Snoqualmie National Forest, Washington
The Mount Baker-Snoqualmie forest is located in the Cascade mountain range in Washington state and is home to 644,000 acres of old-growth. Situated around an hour away from the Seattle metropolitan area, this forest is one of the most frequently visited in the country.
