Initially, when scientists were first using the taxonomy system to classify living organisms there were only considered to be 2 kingdoms: plants and animals. However, when the microscope was invented, scientists were able to observe differences in organisms at the cellular level! They were also able to observe microscopic living organisms like bacteria that they had not been able to observe before. Scientists realized it was necessary to add 4 new kingdoms to account for the observations they had not seen before the invention of the microscope.
The federal government regulates and controls the economy through numerous laws affecting economic activity.
I hope that answers your question.
1) Because we are constantly discovering new species of organisms, the system of classification is growing.
2) In order for scientists to write, learn, and retrieve data about organisms, there most be an organized filing system in place.
H2O is classified as a chemical compound.
