Answer:
a
Explanation:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
Answer:
When granite is subjected to intense heat and pressure, it changes into a metamorphic rock called gneiss. Slate is another common metamorphic rock that forms from shale. Limestone, a sedimentary rock, will change into the metamorphic rock marble if the right conditions are met.
Answer:
A. Lesser substance in a solution
Explanation:
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Tres elementos de la biodiversidad. La diversidad de espacios incluye los ecosistemas como núcleo central. Éstos son conjuntos dinámicos de plantas, hongos, animales, microorganismos y el medio físico que los rodea, interactuando como una unidad funcional; por eso se les denomina «ecosistemas».
