Please capitalize where necessary: at the same time, the subject matter ... is chosen so that ... all the most generally useful fundamental ideas of the science of waves in fluids can be developed at length, one after another.
A: At the same time, the subject matter ... is chosen so that ... all the most generally useful fundamental ideas of the science of waves in fluids can be developed at length, one after another.

Q: in our waste reduction efforts, we target several levels: production, product and consumer. at our bakeries in belgium, for example, we have introduced regular analyses to ensure our flour has the right baking properties.

A: In our waste reduction efforts, we target several levels: production, product and consumer. At our bakeries in Belgium, for example, we have introduced regular analyses to ensure our flour has the right baking properties.

Q: the store has a wide selection of snacks, beer and water , as well as souvenirs and gifts.
A: The store has a wide selection of snacks, beer and water , as well as souvenirs and gifts.

Problem: luxury apartment with balcony and air conditioning close to placa de catalunya, barcelona
Can you repeat this sentence, but capitalize it?
Answer: Luxury apartment with balcony and air conditioning close to Placa de Catalunya, Barcelona

Text: if the workingman had done anything like that, the lordly person would have had an article in the newspaper the next day denouncing the anarchist.

Correct capitalization: If the workingman had done anything like that, the lordly person would have had an article in the newspaper the next day denouncing the anarchist.

Q: "n'ai pas peur", she said once the gate was open.
A:
"N'ai pas peur", she said once the gate was open.