Petroleum most likely formed from which organic substrate?
a. Planktonic organisms and bacteria
b. Fossilized fish
c. Whale falls
d. Water column debris
e. Sea grasses
a
Environmental & Atmospheric Sciences
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Which of the following forests are made up of cone-bearing trees?
A) evergreen B) deciduous C) tropical rain forest D) polar E) tropical savanna
Environmental & Atmospheric Sciences
There has only been one Ice Age.
a. true b. false
Environmental & Atmospheric Sciences
Why are ancient impact craters difficult to identify on Earth?
A) they typically have been eroded or infilled with younger sediments B) impact craters on Earth are smaller than those on the Moon or Mars C) they typically lack shock metamorphic minerals D) there have been very few meteorite impacts on Earth
Environmental & Atmospheric Sciences
Forest fires are not a major threat to forest ecosystems as part of a natural cycle.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences