Explanation:
Hence, the correct answer is 'Nuclear membrane'.

Answer:
More info given below.
Explanation:
This attraction occurs as a result of static charge. You see an atom is referred to as the smallest particle of a substance; and when an atom gains or looses electrons it becomes unstable creating a difference in potential. However in this case rubbing induces friction which induces heat. This heat excites the atom to loose electrons creating a negative charge on the silk and a converse positive charge on the pencil.
Answer:
si este recoje lo que de verdad ayuda al cuerpo y desecha lo que le hace daño
Explanation:
It means to make something productive. "the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote."