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.
In a hot and dry desert how hot does it get? In a hot and dry desert, temperatures may occasionally reach 50  degrees Celsius, or 122 degrees Fahrenheit . The norm in summer is  30 - 35 degrees C.   Even in a hot dâ¦esert, winter nights can be very cold, dropping to  sub-zero temperatures Celsius. 4 people found this useful.