I'm not totally sure. But in my view, <span>(4)a salt solution</span> would be used to prove that the gas produced by the yeast in the vacuum bottle could change the pH of the liquid in the flask
Bulid and repair tissues, Make enzymes and hormones, and Help prevent infection. Hope this helps!
When particles spread out it is called diffusion.
Answer:
<h3>Max maximum in autotrophs and producer</h3>
