The enamel in a tooth's crown directly covers the

a. root.
b. pulp cavity.
c. root canal.
d. dentin.
e. gingiva.


D

Biology & Microbiology

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Paired excretory organs found in most body segments of segmented worms are called ____

a. metanephridia b. parapodia c. septa d. clitella e. setae

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a. fovea. b. retina. c. sclera. d. choroid. e. cornea.

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What is a riboswitch?

What will be an ideal response?

Biology & Microbiology