<em>1. sólido, líquido, gas, plasma</em>
<em>2. volumen, solubilidad, presión de vapor, color o conductividad eléctrica.</em>
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<em>cómo ha sido su día? :)</em>
Out of the choices given, the mechanisms that drives evolution is natural selection. The correct answer is B, natural selection.
Lead I believe would be the heaviest because gold is relatively light
