each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
I think it’s the first one
Answer:
It helps insure the survival of a species in a whole.
Explanation:
Allows different species, for example dolphins or meerkats, to mate and ensure survival in their habitats.
But the blank’s name IS BLANK :FLUSH:
The endoplasmic reticulum serves many general functions, including the folding of protein molecules in sacs called cisternae and the transport of synthesized proteins in vesicles to the Golgi apparatus.
