Unlike religion, science is not based on a fixed mind set that "we all agree" on. Science has several hypotheses, but no finished theory that would answer those questions. Most hypotheses, like the Gabriele Veneziano model, answer all 4 questions with "no". According to some models, baryonic universes like ours are permanently created by phase transitions within an eternal 10-dimensional space they are embedded in. All those universes have slightly different laws of nature, resulting in a 100% probability for life conditions in many of them.

While science is seriously exploring the beginning of the universe, and the possibility of other universes, there are no ready answers at the moment. String theory can not yet predict the topologies of universes formed this way. The required mathematical tools that aren't developed yet.

A foundation dedicated to those questions: http://www.fqxi.org/

In the way the are asked, the obvious answer to the questions is "no" because we can not agree on something that we do not even know. Intuitively, I would also say "no" to the underlying assumptions. I see no reason to make such limiting assumptions about our world as long as there's no evidence for them.