BB cream is promoted as an all-in-one facial cosmetic product to replace serum, moisturizer, primer, foundation and sunblock. It can be worn alone as a tinted moisturizer, over serum and moisturizer as a regular foundation, and under powder, depending on the desired amount of coverage. 1  1 History.  2 Formulations.
Definition. Naturalistic observation is research that involves studying the subject of interest in its own environment, as it would occur in day-to-day life. The subject of interest may be human or non-human or it can be the behavior of living things or the interactions of non-living things with their environment.
Naturalism is a literary movement that emphasizes observation and the scientific method in the fictional portrayal of reality. Novelists writing in the naturalist mode include Ãmile Zola (its founder), Thomas Hardy, Theodore Dreiser, Stephen Crane, and Frank Norris. Naturalism began as a branch of literary realism, and realism had favored fact, logic, and impersonality over the imaginative, symbolic, and supernatural.