Gross primary productivity refers to the total ____.
A. quantity of solar energy available to the ecosystem in a given period of time
B. quantity of solar energy reaching a given area of the ecosystem
C. energy captured initially by the producers
D. energy used by the heterotrophs of the ecosystem in a given period of time
E. energy used by the producers for their growth and reproduction
Answer: C
You might also like to view...
The proposition that species change through time was proposed by which of the following?
a. Charles Darwin b. Jean Baptiste de Lamarck c. Alfred Russel Wallace d. Charles Darwin and Jean Baptiste de Lamarck e. Charles Darwin, Jean Baptiste de Lamarck, and Alfred Russel Wallace
A plasmid may
a. be used in recombinant DNA research. b. be transferred from one bacterium to another. c. carry foreign genes. d. replicate independently of bacterial chromosomes. e. do all of these
When Frederick Griffith infected mice with S. pneumoniae that lacked a capsule, the mice
A. remained healthy. B. reproduced quicker. C. died of pneumonia. D. became ill but lived.
Select the patterns of direct (contact) transmission of infectious disease. Select All That Apply
What will be an ideal response?