Write a passage in metal​

Steel is an alloy of iron and carbon containing 0.1to1.5% carbon. Thus, the constituents of steel are iron and carbon. Pure iron is not very hard and strong.

It is brittle and, therefore z it cannot be used for structural proposes. Hence, most of the molten pig iron obtained from blast furnace is converted into steel.

Steel is very hard, tough and strong. It is used for making rails, screws, girders, bridges, railway lines, etc. Steel also can be used for the construction of buildings, vehicles, ships, etc

b. they require a huge investment of time, dedication ,training, and patience almost from the day they are born.

explanation:

the sentence gives a clear evidence of how carefully the sar dogs are selected and also specify from what time this exercise begins."almost from the day they are are born." this sentence shows as that this exercise begins early.

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