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Alenkasestr [34]
3 years ago
13

6. Why do we need to breathe all day and all night?

Biology
1 answer:
77julia77 [94]3 years ago
4 0

Answer:

to get rid of carbon dioxide, along with it being necessary to yknow... continue living.

Explanation:

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Dichotomous keys are used in the identification and classification of taxa.

Bracketed keys, or parallel keys, are easy to understand- for efficiency, these keep the first two entries of every couplet or pair being compared. It also makes use of a numbering system in the couplet choices for easy tracking.

Indented keys maintain an equal distance from the margin on the left of the pages. Successive couplets are indented til the taxon is identified.

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