The original sentence is:
Domestic animals live with people and are useful in many ways. Cow’s milk turns into cheese and cottage cheese, and sheep wool is used to make warm wool.
The grammar is mostly correct, but it can be improved slightly for clarity and smoothness:
- Change "Cow’s milk" to "Cow’s milk" or better "Milk from cows" (both can work, but 'Milk from cows' sounds more natural when talking generally).
- Add a comma after "cheese" before "and cottage cheese" to separate the items clearly.
- In the phrase "sheep wool is used to make warm wool", it's repetitive to say 'wool' twice. We can improve it by saying "sheep’s wool is used to make warm clothes" or "warm fabric".
Corrected sentence:
Domestic animals live with people and are useful in many ways. Milk from cows turns into cheese and cottage cheese, and sheep’s wool is used to make warm clothes.