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.
The driest deserts often receive less than 2 cm of rain per year. Temperatures in the desert are extreme. Because of the lack of moisture in the air, heat quickly dissipates as the sun sets. In hot deserts, the temperatures can range from above 100 degrees Fahrenheit in the day to below 32 degrees Fahrenheit at night.Cold deserts generally receive more rainfall than do hot deserts. In cold deserts, temperatures in winter range between 32-39 degrees Fahrenheit with occasional snowfall.n hot deserts, the temperatures can range from above 100 degrees Fahrenheit in the day to below 32 degrees Fahrenheit at night. Cold deserts generally receive more rainfall than do hot deserts. In cold deserts, temperatures in winter range between 32-39 degrees Fahrenheit with occasional snowfall.