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.
Answer:
Just think like its gonna be ur last day on earth
You should not puncture a blister unless it is large, painful, or likely to be further irritated.
Symptoms of Scurvy and Malnutrition occur.
what factors are you talking about