Add punctuation: The people in the team come from the four countries that Topaz is published in and it is a great richness of the magazine that its content comes from people in many different countries
A: The people in the team come from the four countries that Topaz is published in, and it is a great richness of the magazine that its content comes from people in many different countries.

Add punctuation: Great discoveries in science have often been made after years of active pursuit in a moment of being still and listening in which the realisation is made conscious
A: Great discoveries in science have often been made, after years of active pursuit, in a moment of being still and listening, in which the realisation is made conscious.

Add punctuation: Depending on the design of the bilge water system and how it is managed onboard the clean bilge may contain solid contaminants such as rust soot sand and dust particles which may blur the water and disturb the Oil Monitor sensor resulting in higher readings than the actual oil content
A:
Depending on the design of the bilge water system and how it is managed onboard, the clean bilge may contain solid contaminants such as rust, soot, sand and dust particles which may blur the water and disturb the Oil Monitor sensor, resulting in higher readings than the actual oil content.