Nucleus for what?
Atom? Animal Cell? Plant Cell? Each have different structures.
A closed system is a system that makes no physical or chemical exchanges with its environment. Of these systems provided as choices (tree, human, clock, car), only a clock does not make exchanges with the environment, except for energy.
Therefore, of that list, only a clock would be a closed system.
Hope that helped! =)
Answer:
(all cells) Sum of all the chemical reactions that take place in the body, consisting of anabolism and catabolism.
Explanation:
The correct answer is "wildlife sanctuary"
These sanctuaries are places that emulate conditions met in natural habitats that are long gone and thus the animals that live in them have a place to live freely and survive.
StMary's a good day for me and you are the kids going ❤️❤️ a good time☺️☺️
