I was asking the same question so hope soeone can answer this
The formula for the slope of a straight line is the change in y divided by the change in x. Since the y axis is equal to mass, and the x axis is equal to volume, slope is equal to mass divided by volume. Therefore, the slope of a mass versus volume graph is equal to density.
It was oil that was discovered in Ecuador
The process happens as the warm air is said to be less dense than that of the colder air. Another good example of convection current is wind.
Whatever fossil is at the lowest layer is the oldest cuz the old fossils lived along time ago and when they died the fossils were buried.
