Here are a few comments from a recent successful test taker:
“The test questions were not longer than the practice test questions which I liked and they did ask about some environmental acts, the earth’s atmosphere layers, eutrophication, relationships between species (mutualism, parasitism etc.)”
AND from another student who took and PASSED the Environment and Humanity DSST exam:
Review environmental acts here: (http://quizlet.com/6971132/ap-environmental-acts-flash-cards/)
And be sure to know all about the topic “eutrophication.” Check out this LINK.