<span>Homeostasis is the ability to maintain a constant internal environment in response to environmental changes</span>
The object's mass. Weight would be how gravity affected it, size is how large it is, density is how tightly the molecules are to each other. Mass is how much matter is in the object.
The answer is the first 1. i think. :p
The answer in order is
Vesicle, Golgi Apparatus, Endoplasmic Reticulum, and Nuclear Membrane
Hope this helped!!