You are accessing a U.S. Government information system, which includes this computer, this computer network, all computers connected to this network, and all devices and/or storage media attached to this network or to a computer on this network. This information system is provided for U.S. Government-authorized use only. Unauthorized or improper use of this system may result in disciplinary action, and civil and criminal penalties. By using this information system, you understand and consent to the following: You have no reasonable expectation of privacy regarding any communications transmitted through or data stored on this information system. At any time, the government may monitor, intercept, search and/or seize data transiting or stored on this information system. Any communications transmitted through or data stored on this information system may be disclosed or used for any U.S. Government-authorized purpose.

Низкая рождаемость, низкая смертность, старение населения.

Сравните половозрастные пирамиды развитой (например, Германия ) и развивающейся (например, Нигерия ) страны.

Ниже представлен примерный текст и структура практической работы, основанный на типовых учебных программах.