Mucus traps pathogens that are later coughed or sneezed away. What form of body defense applies to this example?
A) first line of defense
B) second line of defense
C) third line of defense
D) antibody-mediated immunity
A
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Land tetrapods evolved just prior to which
mass extinction?
a. Cretaceous b. Devonian c. Ordovician d. Permian e. Triassic
Plate tectonics explain that the amount of Earth being formed is much greater than the amount of the Earth's crust being destroyed in subduction zones.
Answer the following statement true (T) or false (F)
A zygosporangium is produced by
A) the union of two haploid hyphae. B) meiosis of megaspores. C) mitosis of hyphae. D) the union of egg and sperm. E) meiosis of hyphae.
The __________, commonly referred to as the breastbone, is a flat bone formed by the fusion of three bones: the manubrium, the body, and the xiphoid process.
Fill in the blank(s) with the appropriate word(s).