Theists are individuals who believe in the existence of a deity or deities. They hold the view that there is a higher power or divine being that is responsible for the creation and order of the universe. This belief is a central tenet of many religions.
All theists. Atheism is the default position; belief in a god must be taught.
The opposite of a theist is a atheist
Theists in general have not established a common and consistent view on the acceptability of science. In that much science has been done by theists (e.g Gregor Johann Mendel (July 20, 1822 - January 6, 1884) was an Austrian Augustinian monk and a scientist who did his work on genetics) and much mathematical and astronomical work (both these are areas of science) was done by moslems (strong theists) in the middle ages, it is safe to assume that at least some theists are firm believers in science.
Probably Sweden.
Secular
last time my teacher just said their mono. Buddhism is the one that's poly.
This question seems to assume that atheism is a religion; it clearly isn't. It is quite unusual for atheists to become theist, although is does happen. The vast majority of theists inherit their beliefs from their parents during childhood. Other theists have cited "religious" experiences or friendships with theists as reasons for believing.
Atheists do not believe in any gods or deities, while theists believe in one or more gods or deities. Atheists typically rely on reason, evidence, and science to form their beliefs, while theists often base their beliefs on faith and religious scriptures.
As Buddhists neither worship or acknowledge a deity they would meet the definition of "atheist" (no god) for many theists. The Buddhist belief in an immortal part (similar to the Christian concept of soul) would make many atheists wonder if they weren't more like theists. The Buddhists may fall into a different category than the simplistic theist/atheist dichotomy. They may be non-theists.
Buddhists are non-theists. God(s) have no role to play in the path to enlightenment.
Veganism has no official stance on religion. Vegans can be theists, agnostics, or atheists.
Any of the above I would think, but I've met some who were deists.