Answer:
A. They are extremely difficult to extinguish because fuel obviously is abundant and oxygen can enter easily, even through joints in surrounding rock.
Explanation:
Coal bed fires refers to spontaneous combustion which are triggered by human activity (mining), lightning, wildfires etc.
This usually happen underground when the coal beds are exposed to oxygen as a result of mining activities or human induced fires or combustion.
If it's really cold where you are going to build you will have to insulate the house very well and the same goes for if it's really hot.
Answer:
False
Explanation:) hope this helps
Acceleration is defined as the rate of change in velocity, rather than speed. When straight-line motion is considered, it is common to use speed and velocity interchangeably. When the direction is not changing, acceleration may be expressed as the rate at which speed changes.
Con la creciente necesidad de antibióticos, hormonas de crecimiento, pesticidas y otros productos artificiales, los agricultores dependen cada vez más de estos proveedores.
