Currently, atmospheric CO2 levels are approximately 400 ppm. The annual mean growth rate in CO2 is about 2 ppm/year. Assuming this trend continues, what would you predict the CO2 level to be in 100 years?
A) 100 ppm
B) 200 ppm
C) 600 ppm
D) 1,000 ppm
Answer: C
You might also like to view...
The transition step
A. links glycolysis to the pentose phosphate pathway. B. links the pentose phosphate pathway to the Entner-Duodoroff pathway. C. links glycolysis to the TCA cycle. D. takes place in the matrix of the nucleus.
Some plants use metabolic resources for making flowers smell, while others do not
Indicate whether the statement is true or false.
The major problem with polymerase chain reaction is:
a. keeping the DNA strands intact. b. that it works on only some DNA sequences. c. that the amplified product is often degraded. d. that it is too slow. e. contamination.
How is it possible that multiple sites of DNA replication can exist inside the cell?
A. there are multiple origins of replication B. genes are replicated quickly, so there are usually >4 of one gene at a time C. there are not multiple sites of replication D. during cytokinesis, DNA is replicated at twice the rate