antage to the segmentation that is exemplified in the Phylum Annelida? Check all that apply.

_____ Vital structures are repeated in each segment.
_____ The annelid may still survive if one segment is damaged.
______ Locomotion is more efficient.
_____ Segments can be specialized.
_____ The importance of segmentation is unclear.


__X__ Vital structures are repeated in each segment.
__X__ The annelid may still survive if one segment is damaged.
__X__ Locomotion is more efficient.
__X__ Segments can be specialized.
_____ The importance of segmentation is unclear.

Biology & Microbiology

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Indicate whether the statement is true or false.

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Four of the five choices below are

characteristics of adaptive immunity. Select the EXCEPTION.

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Calcium is a mineral that plays an important role in ____

a. producing thyroid hormone b. nerve function c. intercellular signaling d. supporting the hemoglobin molecule

e. maintaining the cell membrane

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