Answer:
I don't see answer 10 tho
Answer:
hand picking
Explanation:
as stone is bigger in size we can see them with our eyes so we can handpick it
Answer: A chemical equilibrium exists when the rate at which reactants form products is the same as the rate at which products form reactants.
Explanation:
When the concentration of both the reactants and products do not change with time then it means the chemical reaction has reached to a state of chemical equilibrium.
For example, 
Therefore, we can conclude that a chemical equilibrium exists when the rate at which reactants form products is the same as the rate at which products form reactants.
Answer:
B. They deliver oxygen to the blood.
Explanation:
The lungs, nose, and trachea are organs of the <u>respiratory</u> system. All three help circulate <u>oxygen</u> through the body's system. <em>*I might be wrong though* </em>
the compound name for Na#N is called Sodium Nitride