Why is the example of DDT included in the unit? A.
to show that solutions have unintended consequences
B.
to illustrate why pesticides should not be used by farmers
C.
to promote organic farming methods
D.
to explain the chemical elements of common pesticides

The rocky mountain system stretching from canada to new mexico is a string of mountains running along the wester united states. what factors would mostly cause this arrangement of mountains? intense pressure undemeath a tectonie plate that could not breakthrough the rock subduction of a tectonic plate, which pushed up a neighboring plate into mountains two plates located at a diverging boundary with a third plate rising between them two plates that melted into molten rock, which later cooled into the shape of mountains

Which objects allow humans to access groundwater? check all that apply.

What is found within a ranger tower overlooking a drained lake