The dead zone in the Gulf of Mexico is primarily the result of
A) nonpoint sources of pollutants.
B) point sources of pollutants.
C) a natural cycle related to cold ocean currents.
D) industrial pollution by oil refineries in the New Orleans region.
Question 2
Small subsistence farms in developing nations
A) had a sustainable use of the environment when populations were smaller than now.
B) have mostly depleted the natural environment, making farming no longer possible.
C) can support the developing populations at up to 10 times their current population size.
D) have polluted rivers and streams and destroyed surrounding forests.
The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
“New” Renewable Energy Sources
Industrial and transport sources are responsible for a large proportion of global GHG emission
A deficiency of linoleic acid can interfere with normal growth and result in inflammation
As a result of a hole in the graph, which of the following functions does not have an average ...
result of DGUC