Classifying things by observation can best be done by using a : Taxon
Taxon divided organisms into different groups based on their unique similarities, which is the best way to classify things if you're doing it by observation.
Answer:
A meter is a metric unit of length used worldwide by scientists to measure lengths and distances between objects.
The actually speed of sound in water is 1,498, which is closest to 1,500 meters per second.
-Steel jelly
Every time I would say, but often is the answer as theory should be revised, and also done practically so that you don’t forget the concepts
During swallowing, the air passageway of the phaynx is covered by the epiglottis