The person who reflects on the incredibly diverse life of the earth also remembers the perfect systems of these creatures. All the creatures we see are each a clear sign of Allah's art. In the same manner, great miracles are hidden in microscopic creatures as well. The virus, bacterium or mite which are all invisible to us, have their own bodily mechanisms. Allah created their habitats, feeding patterns, and reproductive and defence systems. One who reflects on these facts remembers Allah's verse:

How many creatures do not carry their provision with them! Allah provides for them and He will for you. He is the All-Hearing, the All-Knowing. (Surat al-‘Ankabut: 60)