Ecology is not synonymous with environment, environmentalism, natural history, or environmental science. It is closely related to evolutionary biology, genetics, and ethology. An important focus for ecologists is to improve the understanding of how biodiversity affects ecological function.ommunity ecology examines how interactions among species and their environment affect the abundance, distribution and diversity of species within communities. Community ecology is the study of the interactions among a collections of species that inhabit the same geographic area.
Definition: A matryoshka (plural: matryoshki) is a Russian nesting doll. Nesting dolls are often used as symbols of Russian culture, but matryoshka dolls have their origins in similar dolls made in Japan. Matryoshka dolls are popular souvenirs. It's possible to buy very simple matryoshki in sets of five or seven.
A china doll is a doll made partially or wholly out of glazed porcelain. The name comes from china being used to refer to the material porcelain.Colloquially the term china doll is sometimes used to refer to any porcelain or bisque doll, but more specifically it describes only glazed dolls. typical china doll has a glazed porcelain head with painted molded hair and a body made of cloth or leather. They range in size from more than 30 (76 cm) tall to 1 inch (2.5 cm). Antique china dolls were predominantly produced in Germany, approximately between 1840 and 1940.