3) number of seeds and 4.) stem length
According to the research, birds are uniquely classified from other organisms because they all have feathers.
<h3>What are birds?</h3>
It is an oviparous and vertebrate animal whose body is protected by plumage and which has a pair of wings generally suitable for flight.
Feathers are characteristics of the bird class thanks to these they can camouflage, regulate body temperature and identify and differentiate themselves from other groups of animals since they may have wings, beaks and legs, but none have feathers.
Therefore, we can conclude that according to the context, birds are uniquely classified from other organisms because they all have feathers.
Learn more about birds here: brainly.com/question/1191352
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because a chemical reaction began to happen at a very big rate which uses CO2 as a reactant and O2 as product
6CO2+6H20--->C6H12O6+6O2
