The metric system, or SI ( International System)
black countries
There aren't any. The "second world" refers to the communist bloc which no longer exists.
There is no specific number for "poor countries," as the classification can vary depending on the criteria used to measure poverty. However, according to the World Bank, there are around 30 low-income countries where a significant proportion of the population lives in poverty.
Almost in all countries of the world but with different percentages.
The fact that people from countries all around the world make mostly identical choices about how to live
That's the "Metric System".
Systeme Internationale (SI)
scientific method
scientific method
Systeme Internationale (SI)
Systeme Internationale (SI)
Yes, there are McDonald's in 119 countries around the world.
Scientists use the System Internationale - the international system of units. This is a metric system. Most countries have switched to the metric system for everyday ie in shops and in the kitchen.
many countries around the world
Have scientists in all parts of the world long used metric systems?
Nike sells goods made from countries around the world and they are sold in countries around the world.
There are 21 Spanish-speaking countries in the world.