Exotic species that are introduced into a nonnative
habitat can
a. interbreed with native species.
b. drive endemic species to extinction.
c. die out due to competition from native
species.
d. blend in with endemic species.
e. create habitat islands for themselves
B
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Which of the following represents an abundant element found in living organisms?
A. calcium. B. iron. C. iodine. D. hydrogen. E. sodium.
Scanning electron microscopes bombard specimens with a stream of electrons; however, the specimen image is produce by electrons that are derived from atoms of the specimen itself rather than by the electrons used to bombard the specimen.
Answer the following statement true (T) or false (F)
Hydrogen ions (H+) are _____
a. indicated by a pH scale c. in blood b. unbound protons d. all of these
Homologous chromosomes are similar in all of these characteristics EXCEPT:
A. similar in size. B. carry the same alleles for all traits. C. carry genes for the same traits. D. similar in shape and location of the centromere