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.
A: The nighttime temperatures in the Sahara Desert range from 60 F to 70 F during the height of the summer down to sub-freezing temperatures from December into February. The temperature difference in the Sahara Desert from the high point during the day to the low point at night is as great as 70 F during certain times of the year.