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.
Dolls are part of human culture for 4000 years now. There are many different types of dolls and we will mention some of them here: 1  Matryoshka doll is Russian wooden nesting doll. 2  It consists of a set of similar doll that all fit into each other from the biggest to the smallest.