Please capitalize where necessary: the first step in the overall pm process is making metal powders.
A: The first step in the overall PM process is making metal powders.

Please capitalize where necessary: common symptoms associated with regurgitation include:
A: Common symptoms associated with regurgitation include:

Please capitalize where necessary: study of the effect of singing birds, plants also apply to human beings, because our ancestors, from the earliest periods of history, lived in an environment where they could always hear the birds singing.
A: Study of the effect of singing birds, plants also apply to human beings, because our ancestors, from the earliest periods of history, lived in an environment where they could always hear the birds singing.

Please capitalize where necessary: when the war ended there were neither council nor nobility, but the king, and his holstenske warlords, who were the victors.
A:
When the war ended there were neither Council nor nobility, but the king, and his Holstenske warlords, who were the victors.