Invasive species spread to new areas through all of following mechanisms except:
A. All of the answer options are mechanisms
that spread invasive species.
B. ballast water in ships.
C. migratory birds.
D. shipping of produce.
E. purposeful importing.
A
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The inheritance of eye color indicates that
A) many different genes determine eye color, each contributing to different degrees. B) eye color is sensitive to what a pregnant woman eats. C) other characteristics, such as the texture at the back of the eye, can affect the phenotype. D) a person's sex influences inheritance of eye color.
A nucleotide may consist of
a. deoxyribose or ribose. b. purines or pyrimidines. c. phosphate groups. d. all of the above.
Which description would be considered a scientific theory like the theory of evolution?
A) a theory about why an apple falls to the ground when dropped B) a theory about why your neighbor has the nicest car in the neighborhood C) a theory about which of your classmates is the source of your cold D) a theory about why blue is your favorite color
The absence of this neurotransmitter would lead to a person having problems regulating body temperature and controlling their emotions.
A. serotonin B. dopamine C. endorphins D. acetylcholinesterase