Answer:
protons
Explanation:
when the atom is neutro, the number of protons is the same at electrons. the charges are in equilibrium.
As salinity increases, the mass of the water increases as it holds more salt particles per unit volume, making it more dense.
An increase in salinity decreases the density of water above the halocline and increases the density of water below the halocline.
As salinity decreases, the water becomes more massive as it holds fewer salt particles per unit volume, making it less dense.
second option
Explanation:
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Answer:
The answer is: It means it is a membrane that will allow certain molecules or ions to pass through it by means of active or passive transport.
Explanation:
All cells are enclosed with a cell membrane. The term, selectively permeable, refers to :
the membrane allows some substances or molecules to enter the cells, and others to be prevented from entering. It also allows substances to leave the cell.
This process can be done by :
Active transport -requires the cell to expend energy to move the materials.
Passive transport- it can be done without using cellular energy.