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.
The originals were wooden dolls, which fit one inside the next (one being slightly smaller than the previous.) The history of Russian dolls shows that Vasily Zvyozdochkin was the first to craft them, from a design created by Sergey Malyutin.These were made of linden wood and were painted by Malyutin.hese adorned wooden dolls with a secret can also be called matryoshka or even babushka dolls. These are recognized even in the countries 500 miles from Russia. Taking a Russian nesting doll back home is a must among tourists from Europe and the us alike.