The oldest oceanic crust is found at the mid-ocean ridges. Thus, option "A" is correct.
<h3>How old is the youngest oceanic crust?</h3>
The ocean crust is about younger than 200 million years (for example, smaller than 5% of the age of the earth).
The crust is most naive (still being created by volcanic eruptions) along the axis of the mid-ocean ridges and increases in age down the sides of the mid-ocean rises and out onto the more serious basin floors.
Thus, option "A" is correct.
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The four nitrogenous bases in DNA are adenine, guanine, cytosine, and thymine. They pair A-T, G-C and when transfering with RNA, A-U, which is known as Uracil, so, the pairs would be...
ATGCT
↓↓↓↓↓
UACGA
I hope this helps!
El sistema de nomenclatura binominal identifica a una especie inequívocamente, pues no puede haber dos especies diferentes con el mismo nombre y evita la pluralidad de nombres comunes con el que se la pueda conocer según el idioma o región, que además pueden nombrar a más de un taxón diferente.
