The skin would be an example of

a. a first line of defense.
b. a second line of defense.
c. a third line of defense.
d. all of these.
e. none of these.


A

Biology & Microbiology

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Based on the figure above, what can you conclude about the history of land use in the southern Yucatàn?

A) Massive soil erosion caused the Mayan population to crash. B) Reduction in forest cover caused the Mayan population to crash. C) As Mayan population increased, deforestation increased, probably leading to increased soil erosion. D) This Mayan population practiced sustainable development.

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Plasmodium falciparum causes the most serious form of malaria

Indicate whether this statement is TRUE or FALSE.

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Mendel's work with two-factor (dihybrid) crosses led directly to which of the following?

A. Chromosomal theory of inheritance B. Particulate theory of inheritance C. Law of segregation D. Law of independent assortment E. Theory of biological evolution

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Cartilage is found

a. in the nose. b. in the embryonic skeleton. c. in the external ear. d. between vertebrae. e. in all of these

Biology & Microbiology