The harpy eagle, Harpia harpyja, is the largest, most powerful raptor in the Americas. It nests only in trees taller than 25 meters. It is a "sloth specialist," but will also take agouti
Thus, if these eagles capture too many agoutis from a particular locale, they might contribute to their own demise by _____. A) having too many offspring
B) decreasing their habitat
C) decreasing atmospheric carbon dioxide
D) increasing the number of sloths
B
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Most skeletal muscles cause movement of a body part by:
a. stimulating the contraction of another muscle b. pushing on a bone c. pulling on a bone d. stimulating a joint to contract e. pushing on a ligament
A human embryo is capable of movement and has gonads that are distinguishable as either testes or
ovaries by the end of the:a. second week. b. fourth week. c. sixth week. d. eighth week. e. first trimester.
Suppose you are given a set of regression results on the role of a random treatment assignment experiment on the effect of an ad campaign on consumers' willingness to buy your product. The regression results report an R-squared of 0.04. How should you value the regression results?
A. Highly, despite the low R-squared it is likely the effect estimated is causal and valuable for active prediction. B. Highly, the R-squared value is still high enough to justify that the effect is causal. C. Not highly, the implied correlation of the R-squared is too low. D. Not highly, the R-squared is far too low.
Trichinellosis includes all the following, except
A. the larvae migrate from intestines to blood and various body tissues. B. infection is associated with ingestion of undercooked pork or bear meat. C. humans are infected by ingesting encysted larvae. D. the first symptoms are diarrhea, nausea, fever, and pain. E. All of the choices are correct.