подскажите как правильно
Подскажите как правило сказать сравнение
1. Breastmilk have a lower protein concentration than the formula food
2. Breastmilk have a lower protein concentration than does the formula food.
As you can see Im contemplating wether or not I should put "does" in it.
You need not do it. It is quite sufficient to say " Breastmilk has a lower protein concentration than formula food"
You can also say "There is less protein in breast milk than in formula food".