How does monotremes live?

Monotremes are the egg-laying mammals, and there are just three species. Platypuses and short-beaked echidnas are endemic to Australia. The long-beaked echidna is found in Papua New Guinea.

Yes, the short-beaked echidna and the platypus are both indigenous to Australia. The long-beaked echidna lives in the highlands of New Guinea.

No. Monotremes are an unusual group of mammals which lay eggs.

These are not three different phrasal verbs, it is just the verb live followed by a preposition. You have to use "I live + the correct preposition + place", eg "I live on Oxford Street" because the...

yes that is some what true