in 1957 the skin-colouring properties of dha were discovered at a children's hospital.

How would the previous sentence be correctly capitalized?
Answer: In 1957 the skin-colouring properties of DHA were discovered at a children's hospital.
they do not have much else to do in november and december, but in february they are busy with ploughing, harrowing and sowing their other crops.

How would the previous sentence be correctly capitalized?
Answer: They do not have much else to do in November and December, but in February they are busy with ploughing, harrowing and sowing their other crops.
7 that ye come not among these nations, these that remain among you; neither make mention of the name of their gods, nor cause to swear by them, neither serve them, nor bow yourselves unto them:

How would the previous sentence be correctly capitalized?
Answer: 7 That ye come not among these nations, these that remain among you; neither make mention of the name of their gods, nor cause to swear by them, neither serve them, nor bow yourselves unto them:
the method was a development of archimedes ' method of exhaustion incorporating kepler 's theory of infinitesimally small geometric quantities.

How would the previous sentence be correctly capitalized?
Answer: The method was a development of Archimedes ' method of exhaustion incorporating Kepler 's theory of infinitesimally small geometric quantities.