BUILDING BLOCKS. Overview. Macromolecules form when smaller molecules (building blocks or subunits) come together. Monomers are joined by covalent bonds to form polymers.
The coldest temperature in the Sahara desert is 36 degrees. Well, it depends on where in the desert, but it can reach below freezing. Its colder nearer to the ocean and warmer towards the center of the desert.
Hot and cold. In the summer months, temperatures in desert regions of Algeria can hit 50Â°C. But nights in the Sahara are often cold and in winter, temperatures can dip below freezing.The north of Algeria is cooler, enjoying a Mediterranean-style climate. Temperatures in Algiers average 26Â°C in July, though humidity can make the summer heat uncomfortable.ut nights in the Sahara are often cold and in winter, temperatures can dip below freezing. The north of Algeria is cooler, enjoying a Mediterranean-style climate. Temperatures in Algiers average 26Â°C in July, though humidity can make the summer heat uncomfortable.