Milk, cheese and green veg all contain calcium.
calcuim
Whole milk is milk that has not been skimmed and should have the same composition as raw milk. Only a heat treatment should have been done.
Pasteurized Goat Milk
Yes
Stuff your stomach makes so milk stays in the gut longer, so every nutrient can be absorbed from it. Otherwise it'd flow away faster, like water.
There are many nutrients that are NOT found in milk. Vitamin C is one of them.
Calcium.
Vitiamins
folate
protein Lactose
Because milk is not the right kind of nutrient for plants they need water.