3. ¿Cómo se llama el padre de Ralph? ¿Cómo se llama la madre de Ashley?

gordon es el padre de ralph. cheryl es la madre de ashley

Explanation:

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.