Invertebrate doesn't posses "Backbone" whereas Vertebrate chordate have that. That's the only & most important difference between them.
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The answer is Practical Intelligence. Practical intelligence is the consequence of an exploratory hands-on working style that prompts particular learning. Practical intelligence is the capacity that people use to locate the best fit amongst themselves and the requests of nature.
Multi cellular organisms like animals are eukaryotes
A catalyst speeds up or initiates a chemical reaction. Please mark Brainliest!!!
B)
Both occur in only one direction.