Data analysis elements density aluminum 2.698 g/ml calcium 1.54 g/ml iron 7.8738 g/ml silicon 2.3296 g/ml sanjay is learning about the elements that make up earth’s crust. ms. richards, his earth science teacher, gives him an element and asks him to determine which element from earth’s crust it is. she also provides sanjay with this table. sanjay weighs the element and finds that it has a mass of 17.98 g. by placing the element in water, he determines the volume of the substance to be 2.2835 ml. based on the table from ms. richards, what element from earth’s crust did ms. richards gave to sanjay?

Ibelieve it was because of the gas act in order to preserve fuel 

As someone who have lived in northern moravia at industrial steel and coal city of ostrava, the closest point is b), but it is questionable. i am not sure how to compare efficiency of largest steel mill in czech republic in comparison to china which is the biggest exporter, but czech steel factories were modernized and run more efficient that 25-35 years ago, and been privatized and owned by mittal. the workforce had been shrinking, so not exactly sure what that c is pointing to (aging of workforce, size of it, or quality). northern moravia is a part of larger coal basin that extend to poland with large coal deposits. this was foundation for the steel industry in the 1800's together with large ore deposits that was mined in proximity of the beskidy mountains less than 25 miles from ostrava. the iron ore mines had been depleted for several decades, and since the late 70's when communists run the country, they were already importing soviet iron ore. coal mining within city of ostrava cased to exist in the 1990's due environmental issues, and also cost. the mines were getting deeper and more costly to operate and there is no more mining within ostrava. couple mines are still in operation in karvina county which is next to ostrava. currently the coal deposits south of the city were not opened due environmental issue which would mean destruction of third largest mountain range in the country. therefore, my conclusion is is b, as the ore and coal resources been shrinking. the biggest challenge not mentioned here is of course competition from russia, ukraine, and china, which can produce steel much cheaper.

Where are the colloms