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s344n2d4d5 [400]
3 years ago
10

SOMEONE PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!

Biology
2 answers:
Pavel [41]3 years ago
7 0
<span>b
Wherever mechanical digestion occurs, chemical digestion also occurs.</span>
Ray Of Light [21]3 years ago
4 0
By elimination: d is wrong for sure.

c is not right as there is no gland in the esophagus or the pharynx

b is also wrong as if there is no gland, then there is no enzyme and no chemical digestion in <span>esophagus or pharynx

a is the only one left.</span>
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birch

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Answer:

Explanation:

1)Pfr/Pr

2) Pr

3)far-red

Explanation:

The leaves at the top of a tree’s canopy are exposed to direct sunlight during the day, and their phytochromes will occur in a high *Pfr/Pr* ratio. Meanwhile, the leaves of the same tree at the bottom of the canopy are highly shaded during the day and will likely have a higher proportion of the * ( PHYTOCHROME )Pr *;form of phytochrome present due to exposure to a higher proportion of *FAR RED * light.

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