Both are, though the dairy industry seems to be more popular than the beef industry, but probably only by a margin.
Angus cows are beef cows, not dairy cows. Holsteins are dairy cows, not beef cows, which is where we get the majority of our milk from.
Dairy cows have larger udders than beef cows, are typically a bit thinner, and tend to have a less blocky appearance than most beef cows. Dairy cows also have more feminine characteristics to them than beef cows do.
Both (they drink milk there as well as eat beef) but there are more beef cattle.
Most of the cattle in NZ are Dairy cows, and Frisian is the most popular breed because of its good production quantity. (As measured by Milk Solids.) Jersey cows used to be the common dairy cows, but no longer. For Beef cattle, Angus would be among the most popular. Hereford are another popular beef breed.
No they don't. Milking cows, or dairy cows are a different type of cow than beef cows are. Dairy cows give birth to dairy cows, no matter if they are crossed with a beef breed or not. The dairy-beef crossbred cow as a result still has stronger dairy qualities in her than her dairy mother.
The Angus is the most popular for beef cows. The Holstein is the most popular for dairy cows.
For beef cows it would be mostly in pastures. For dairy cows, though, it would be in a barn or shed.
Yes. Cows and horses are commonly found on rangelands, especially beef cattle (no, not the "cows" that are in feedlots, but actual beef cows), not so much dairy cattle.
No. Dairy cows have much larger udders than beef cows do. A dairy cow has been selected to produce more milk than what she can feed her calf to meet the farmers' demands for more milk to be produced per cow per day.
Nothing wrong with that. Dairy cows are slaughtered for beef as culls anyway, so it's no big deal if you slaughter a dairy cow and turn her into ground beef.
No
Obviously, since humans are half to a third of the size of a bovine, they eat much less per month than either beef or dairy cows do.