The answer is Chordates
Chordates belong to the pylum Chordata of the Animal Kingdom.They have the following characteristics;
Lower vertebrates have a notochord which is a hollow nerve chord that is located dorsally of the animal while higher vertebrates have a vertebral column of bone and cartilage. They have a coelom which is a body cavity that differentiates higher vertebrates into organs and digestive tract.
Tom Regan's position about the use of animals in research and agriculture is that animals should never be used for medical research or commercial <span>agriculture.
Tom Regan was a famous American philosopher who was mostly interested in animal rights. He believed that animals shouldn't be put through any testing or experiments because we don't have their consent to do that. He believed it was unethical to do that.
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