- Why did everyone start to hate the Russians if the U.S. did the same thing in Afghanistan, Iraq?
- What needs to be corrected in the management of Russia first?
- Why did Blaise Pascal become a religious man at the end of his life?
- How do I know if a guy likes you?
- When they say "one generation", how many do they mean?
The fact is that philosophy distinguishes between ontological materialism (objectively, only matter exists, including in the form of energy) and methodological materialism (only matter is accessible to scientific research, regardless of whether something else exists).
The latter is a necessary condition for studying any science, one of the cornerstones of the scientific method of cognition: in the formulation of scientific explanations (hypotheses, theories) of the subject under study, any non-material (supernatural) assumptions about something that is inaccessible to objective observation and measurement are excluded.
You can make a reservation that this applies to the natural sciences (physics, chemistry, and even biology), but in fact not only; this is a separate conversation. In any case , it is justified to assume that all serious scientists inevitably accept the position of methodological materialism. Whether they believe in God or gods, and whether they recognize materialism as an ontological teaching, is secondary and a separate question.
First, the juxtaposition of materialism and idealism has long since lost all meaning(was there any?). Today, sane idealism and sane materialism produce a completely equivalent result when applied to science.
Secondly, I have already given a detailed answer to a similar question: https://thequestion.ru/questions/436405/pochemu-bolshinstvo-uchenykh-ateisty
There are many believers among all natural scientists. According to various studies – from 30 to 50 percent. Biologists are no exception. There are also those who confidently call themselves atheists-from 15 to 25 percent. So there is no clear answer to your question.