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Which Extant Chordates Are Postulated to Be Most Like the Earliest

question 44

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Which extant chordates are postulated to be most like the earliest chordates in appearance?


Definitions:

Marginal Benefit

The extra pleasure or benefit derived from acquiring or making an additional unit of a product or service.

Muscle Contraction

The activation of tension-generating sites within muscle fibers, leading to shortening or elongation that enables movement.

Muscle Strength

The maximum amount of force a muscle or group of muscles can exert in a single effort.

Sedentary Lifestyle

A way of living with little to no physical activity, often leading to increased health risks such as obesity and cardiovascular disease.

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