Which of the following is NOT the description
of a human disease caused by roundworms?
a. lymph vessels permanently destroyed
causing elephant-like legs
b. causal agent lives in rectum; females lay
eggs in skin around the anus
c. infection results from eating uncooked pork
d. intestinal blockage disease affecting more
than a billion people
e. all of these are human diseases caused by
roundworms
E
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Recall that the age structure histogram (for humans) of India is shaped like a pyramid (Figure 46.8). What does this tell you about India's population?
A. It is shrinking. B. It is growing. C. It is relatively constant. D. It is currently shrinking, but will increase over the next few years. E. It is currently growing, but will decrease over the next few years.
In molecules, the constant motion of the atoms is an example of ____ energy, while the arrangement of atoms and
bonds is an example of ____ energy
a. potential; chemical b. kinetic; potential c. potential; free d. chemical; free e. kinetic; chemical
Crystal-clear mountain lakes are oligotrophic
Indicate whether the statement is true or false.
The gradualistic model of speciation is supported by many transitional forms.
a. true b. false