Which of the following carbon reservoirs contains the most carbon?
a. atmosphere
b. biomass on land
c. lakes
d. oceans
e. soil
D
You might also like to view...
HIV once only infected nonhuman primates and now infects humans as well. Likewise, the avian flu only infected birds but now infects humans. What causes the host range of a virus to increase?
A. The size of the virus changes over time and allows the virus to infect a different host cell. B. The virus integrates with another virus to gain the DNA sequences that allow infection of a new host cell. C. The virus gains entry into a new host cell through random mutation of the virus's genetic material. D. Changes in the human genome over time make humans more susceptible to infection by different kinds of viruses. E. None of the answer options is correct.
The observation that all races of humans have the same FOXP2 allele is evidence that favored this allele.
A. independent assortment B. natural selection C. random chance D. recombination E. artificial selection
During the polymerase chain reaction (PCR), two strands of DNA are separated by
A) exposure to low pH. B) centrifugation. C) gel electrophoresis. D) exposure to heat. E) exposure to denaturing enzymes.
Where in the chloroplast would we find the enzymes involved in the Calvin cycle