Which of the following statements about human population in industrialized countries is incorrect?
A) Average family size is relatively small.
B) The population has undergone the demographic transition.
C) Life history is r-selected.
D) The survivorship curve is Type I.
E) Age distribution is relatively uniform.
Ans: C) Life history is r-selected.
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Match the following items with the correct phrases.
_______1. The complete destruction of all living organisms, including cells, spores, and viruses. _______2. The use of antiseptics is an example of a __________ technique. _______3. Autoclaving for 15 to 20 minutes at 15 psi and 121°C is one method of accomplishing this. _______4. The destruction or removal of pathogens by physical or chemical methods. _______5. Heating to 60°C for 30 minutes is one method of accomplishing this; sufficient to kill pathogens and reduce total bacterial counts. _______6. Heating in a 160°C oven for 2 hours would accomplish this. _______7. The reduction of microbial populations to levels considered safe by public health standards. a disinfection b. pasteurization c. sanitization d. sterilization
Assuming that global warming continues at this pace, when approximately would a town
located at 10 feet above sea level be submerged?
a. in 600 years b. in 1700 years c. in 2100 years d. in 3000 years
Amollusk with multiple arms for locomotion and grabbing prey is a
A. gastropod. B. cephalopod. C. bivalve. D. chiton. E. fluke.
chronic constipation can lead to enlarged and inflamed blood vessels of the anus known as
What will be an ideal response?