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The common cold or the cold is a viral infectious disease of the upper respiratory tract that primarily affects the respiratory mucosa of the nose, throat, sinuses, and larynx. [6] [8] Signs and symptoms may appear in as little as two days after exposure to the virus. [6] These may include coughing, sore throat, runny nose, sneezing, headache ...
This is a list of countries and sovereign states by temperature. Average yearly temperature is calculated by averaging the minimum and maximum daily temperatures in the country, averaged for the years 1991 – 2020, from World Bank Group , derived from raw gridded climatologies from the Climatic Research Unit .
List of sovereign states. The following is a list providing an overview of sovereign states around the world with information on their status and recognition of their sovereignty . The 205 listed states can be divided into three categories based on membership within the United Nations System: 193 UN member states, [1] 2 UN General Assembly non ...
Climate classification. Climate classifications are systems that categorize the world's climates. A climate classification may correlate closely with a biome classification, as climate is a major influence on life in a region. One of the most used is the Köppen climate classification scheme first developed in 1884. [1]
Since 2000, rising CO 2 emissions in China and the rest of world have surpassed the output of the United States and Europe. Per person, the United States generates CO 2 at a far faster rate than other primary regions. Nearly all countries in the world are parties to the 1994 United Nations Framework Convention on Climate Change (UNFCCC).
World Book Encyclopedia. The World Book Encyclopedia is an American encyclopedia. [1] World Book was first published in 1917. Since 1925, a new edition of the encyclopedia has been published annually. [1] Although published online in digital form for a number of years, World Book is currently the only American encyclopedia which also still ...
Köppen climate types of the United States. The climate of the United States varies due to changes in latitude, and a range of geographic features, including mountains and deserts. Generally, on the mainland, the climate of the U.S. becomes warmer the further south one travels, and drier the further west, until one reaches the West Coast.
The Netherlands has the highest average number of recorded tornadoes per area of any country in the world (more than 20, or 0.0005 per km 2), annually), followed by the UK (around 33, or 0.0001 per km 2), per year), but most are small and cause minor damage.