What is represented on the x-axis of the survivorship graph?

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Multiple Choice

What is represented on the x-axis of the survivorship graph?

Explanation:
Survivorship curves show how a cohort declines in numbers as time passes, and using relative age makes different species comparable. The x-axis often expresses age as a percentage of the species’ maximum lifespan, so you move from birth (0%) to death (100%) on a common scale. This normalization lets you compare mortality patterns across species with very different lifespans, without being tied to actual years. The y-axis then shows how many individuals remain alive or what proportion survives at each relative age. That’s why the x-axis being life spans as a percentage of the maximum life span is the best description.

Survivorship curves show how a cohort declines in numbers as time passes, and using relative age makes different species comparable. The x-axis often expresses age as a percentage of the species’ maximum lifespan, so you move from birth (0%) to death (100%) on a common scale. This normalization lets you compare mortality patterns across species with very different lifespans, without being tied to actual years. The y-axis then shows how many individuals remain alive or what proportion survives at each relative age. That’s why the x-axis being life spans as a percentage of the maximum life span is the best description.

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