What is a tetrad? snd why are they important feature of mitosis

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

What is the role of the phospholipid belayer in cellular transport in living cells

If your blood becomes too concentrated with iona, what will happen to the red blood cells