There are thousands of different types of viruses that exist in the world. These viruses can infect various organisms including animals, plants, and bacteria. It is estimated that only a small fraction of all viruses have been identified and studied so far.
more than 20
The exact number of how many viruses exist in the world is not known because there have been some that have yet to be discovered. Also, many known viruses are also able to mutate into brand new viruses. This makes it next to impossible to get an exact count.
250,000
92 atoms have been identified, i think(:
250,000 Different Species
There are thousands of enzymes that have been identified in various organisms. It is estimated that there are over 5,000 different enzymes in the human body alone. However, the exact number of enzymes identified can vary depending on how broadly one defines what constitutes an enzyme.
4000
2
their are about 100
4,500
i do not know