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Greenhouse gases are only produced by human sources.

Terrestrial ecosystems are grouped into biomes primarily on the basis of their ____ which, in turn, is primarily determined by the local ________ &  ________.

The ozone layer is a shell of O3 in the stratosphere that surrounds the entire planet and shields the surface from ___________.

The “tip of the iceberg” sign is associated with which ovarian tumor?

Your patient presents with bleeding and cramping. Her pregnancy test is very faintly positive. This image suggests:     A) a molar pregnancy B) normal IUP C) incomplete abortion D) a ruptured ectopic

The maternal component of the placenta is derived from the _________ and the fetal component is derived from the _________. A) decidua basalis, trophoblastic tissues B) decidua frodosum, trophoblastic tissues C) chorionic laeve, decidua basalis D) decidua basalis, bald chorion

An ovarian tumor and pelvic ascites is usually associated with malignancy. An exception to this rule would be ascites associated with:

Which of the following statements best describes a Kruckenburg tumor?

Provide some examples of how human-made conditions affect Earth’s environment. Explain both the cause and the effects of these problems. Provide examples of what is being done today to address these problems. (Up to 5 points of extra credit, depending on detail)

Lakes may be polluted by ___________ from farms and lawns, which can cause blooms of algae that, in turn, lead to oxygen depletion and dead zones.