Which of the following are contributions of epidemiology to environmental health?

a) concerns with populations

b) use of observational data

c) methodology for study designs

d) descriptive and analytic studies

e) all of the above.

At which point on the diagram do convection currents occur to drive plate movement?

When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?

What is the correct order (starting from the surface) of warts layers