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.
There are the hot and dry desert, the semiarid desert, the coastal desert, and the cold desert. The Hot Desert. This desert's average temperature ranges from 64 to 77 degrees Fahrenheit. The extreme temperature is 110.3 to 120 degrees Fahrenheit. The sand's average temperature is 64 degrees Fahrenheit. The winter brings a little rainfall, but the summers are hot and dry. The average rainfall is about one inch of rain.