Tropospheric aerosols
A) have residence time of at least several centuries.
B) have the net effect of reducing global temperatures.
C) form a positive feedback loop with increasing atmospheric carbon dioxide.
D) are rarely anthropogenic in origin.
Question 2
Stratospheric particulates and aerosols stay suspended longer because
A) they are small and there is no mechanism to remove them.
B) they are held aloft by the jet streams.
C) they are trapped in the tropopause.
D) they combine with ozone and are held in chemical bonds.
Time Slows Down Near Matter
In middle childhood, children spend increasing amounts of time with peers and friends.
Time course for antibodies to the EBV viral–specific antigens.
The environmental policy changes over time
Weak bones cause the spine to collapse over time
The Geologic Time Scale