A fictional element has two naturally occurring isotopes with the natural abundances shown here: 
Which statement is TRUE for this element?
Definitions:
Human-Centred
An approach or design philosophy that prioritizes the needs, preferences, and limitations of the end-users at every stage of the design process.
Earth-Centred
An approach or perspective that places the Earth and its ecological systems at the core of decision-making processes and values.
Intrinsic Values
The inherent worth of something, independent of its utility or benefit to humans, often discussed in ethics and environmental philosophy.
Ecofeminists
Activists and scholars who analyze the intersection of environmental degradation with systemic gender inequalities.
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