A. The ecosystem includes a complex of living (biotic) and non-living (abiotic) elements, habitat and their interaction with each other to create a continuous cycle of substances and energy
B. Nature needs protection, because man pollutes and destroys it and can cause irreparable harm to it. As an example, waterlogging and salinization of soils, pollution with oil products, radioactive waste and landfills.
C. 1.Physical pollution includes thermal (thermal), light, noise, vibration, electromagnetic, and ionizing pollution.
2.Light pollution is a violation of the natural illumination of the environment. Leads to disruption of the rhythms of activity of living organisms. Increasing water turbidity in water bodies reduces the flow of sunlight to the depth and photosynthesis of aquatic vegetation.
3.Noise pollution. Sound – as a physical phenomenon, is a wave motion of an elastic medium. Noise – any kind of sounds that interfere with the perception of useful sounds or break the silence. The sound frequency range that the human ear perceives is from 16 to 20,000 Hz. Sound waves with a frequency below 20 Hz are called infrasonic, and above 20,000 – ultrasonic.
D. 1.An ecosystem or ecological system is a biological system (biogeocenosis) consisting of a community of living organisms (biocenosis), their habitat (biotope), and a system of connections that exchange substances and energy between them. One of the main concepts of ecology. An example of an ecosystem is a pond with plants, fish, invertebrates, microorganisms that make up the living component of the system, and a biocenosis. The pond as an ecosystem is characterized by bottom sediments of a certain composition...2.Changes made in one component of the ecosystem can lead to adverse consequences in the functioning of the entire ecosystem. Intelligent human activity is not always able to foresee the consequences of its activities.
F. Violation of the ecological balance between natural factors and human activity is a socio-ecological crisis. This means that the balance between the environment and society is broken. This situation can lead to the death of humanity
I like music very much. There are several bands and singers that I especially enjoy listening. However, if I were asked who my favourite singer is, I would answer – Justin Timberlake. In my opinion, he is not only a gifted singer but also a good actor. His songs are all rather melodic. Justin Timberlake was born in Memphis, on January 31st, 1981. He was singing and dancing from the very childhood and his musical idol was Michael Jackson. At the age of eleven he appeared on one TV show with a country music song. A bit later he became a cast member in the Mickey Mouse Club together with such future stars as Britney Spears, Christina Aguilera and JC Chasez. In 1995 the boy band ‘N Sync was formed where JC Chasez and Justin Timberlake became members. Their debut album was released in 1998. It was called ‘N Sync and in October of the same year it won the second place in the US hit parade. The album was sold in 10 million copies. In late 1999, Timberlake made his acting debut in the Disney Channel. Gradually, he became the idol of many young people. His solo career began in 2002 with a song “Like I Love You”, which he performed at the MTV Video Music Awards. His debut solo album was called “Justified”. He has released several other albums since then. Justin Timberlake is married to Jessica Biel, who is a famous actress. Apart from television work, Justin is involved in some business ventures and philanthropy. For instance, he owns three restaurants in the USA and he has been active in several charitable pursuits. He also set up his clothing line. I like almost all his songs but my favourite one is “What goes around comes around”.