Temperature

Microbes including Bacteria, Fungi, Protozoa and Nematodes, seem to provide food for the plants. Both below and above soil. 

Microbes seem to thrive under soil at temperatures around 25 degree centigrade. 

Microbes above the soil; in the stem and leaves, should be able to withstand the environmental temperature fluctuations. Up to 50 degree centigrade.

So, what is temperature and how do we visualize temperature?

Matter is made of atoms and molecules. These molecules will be in motion. Even in solids, there will be molecular motion. As the motion of molecules in solids increase, it would get converted into liquid. Further increase in motion of molecules in liquid would convert it into gas.

The amount of motion of molecules is what we measure as Temperature.

Imagine touching Ice or warm water with our finger tip. Our finger tip has the ability to measure the amount of motion in Ice or warm water, transfers to our brain and is interpreted as either cold or hot.

You may try the simulation using the link below.

https://phet.colorado.edu/sims/html/states-of-matter/latest/states-of-matter_all.html