أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
natural science : a science (such as physics, chemistry, or biology) that studies the physical and natural world or the events that happen in nature. Natural science is a branch of science concerned with the description, prediction, and understanding of natural phenomena, based on observational and empirical evidence. Mechanisms such as peer review and repeatability of findings are used to try to ensure the validity of scientific advances.
