Answer:
Phosphoric acid is a good substitute for muriatic acid and in most situations will clean surfaces just as well with less risk. Phosphoric acid is a main ingredient in many commercial grout and concrete cleaners that are readily available to consumers.
Explanation:
Answer:if I was you I would try and calm down take a few deep breaths and go for a short walk or something to try and keep your mind off of what's bothering you. Sometimes you just have to take a break because whatever is making your mental health bad could get worse if you dont try to talk to someone about it or try and clear your mind if it's your thoughts...
Explanation:
It really depends on what it is
Answer: The right answer is Cave-ins.
Explanation: Excavations and trenches are basically the man-made cuts inside the Earth's surface. These are made for multiple purposes such as mining or tunneling. One of the obvious risk while working in such excavations and trenches is cave-ins. It is basically collapse of that excavation or Trench. The roof of the mine collapses and people working under it get buried inside those excavations in trenches.
