Salt water is denser than cold water because fresh water sinks when it is in salt water.
Answer:
External means on the outside, so it can be something like their fur color. Some other features can be number of legs, if they have wings or not, etc.
<span>Isotonic, I am pretty sure!
Hope this help, and good luck!
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It's where two or more cells involves.
like magnets
Answer -
(Eukaryotes)
Nucleus (N)
The nucleus function is the control and command center.
Reason - This is too obvious. I picked eukaryotes because it's basic cells for animilia. The nucleus is simple because it's obviously also a command and control for all common cells.