In which of the following is primary productivity highest?
A. tropical forests
B. prairies
C. cool deserts
D. hot deserts
E. the Arctic
A. tropical forests
Biology & Microbiology
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In chordates, the notochord forms from the endoderm layer that is ventral to the developing digestive system
a. True b. False
Biology & Microbiology
The outer coat of pollen grains is called sporopollenin, which is made of ________
a. cellulose b. an unknown substance c. protein d. glycolipid
Biology & Microbiology
Diffusion is the movement of atoms or molecules from regions of high concentration to regions of low concentration
a. True b. False
Biology & Microbiology
A patient has been diagnosed with a major cancer, which has spread. Which treatment would be the best choice?
1.surgical removal 2.monoclonal antibodies 3.chemotherapy 4.radiation therapy
Biology & Microbiology