Which of the following is NOT a component of a tropical marine ecosystem?
A. All of the answers are components of a tropical marine ecosystem.
B. sunlight
C. algae
D. corals
E. fishes
Answer: A. All of the answers are components of a tropical marine ecosystem.
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Which of the following is TRUE of cancer of the penis?
A. It is more common in circumcised men than in uncircumcised men. B. It is thought to be related to the collection of smegma under the foreskin. C. It is the most common cause of death by cancer in men. D. It cannot be treated by surgery or by radiation therapy
Lack of which element can lead to goiter?
a. iron b. iodine c. calcium d. zinc e. magnesium
In the accompanying figure, the structure labeled as 2 is:
a. known as wood.
b. produced by cork cambium (not shown).
c. composed largely of secondary tissue.
d. composed largely of cells that are alive at maturity.
e. commonly called scales.
Penicillium is a club fungus that is used to make beer and wine.
Answer the following statement true (T) or false (F)