28. bacteria and fungi.
29. answer 3
30. answer 2
Answer:
B
Explanation:
A pit is a tiny depression which is found on the surface of the tooth.
Fissures are the grooves that occur naturally on the biting surfaces of teeth.
Thus, pits and fissures are located on the lingual surfaces of the maximillary first molars because of the lingual fissures on the max molars.
Answer:
X: Positive gravitropism
Y: Negative gravitropism
Explanation:
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