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In Some Species of Sharks, Babies Hatch from Shells Within

question 96

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In some species of sharks, babies hatch from shells within their mother's body. What is this behaviour an example of?


Definitions:

Systematic Desensitization

A therapy technique used to treat phobias and anxiety by gradually exposing the patient to the feared object or context without any danger, in order to overcome their anxiety.

Exposure

A therapeutic technique used to treat anxiety disorders by gradually and systematically exposing the patient to the feared object or context without any danger.

Live Snake

A reptile that is living, as opposed to being depicted in images or as a specimen; often eliciting strong fear or interest reactions in people.

Deep Brain Stimulation

A neurosurgical procedure involving the implantation of a medical device called a neurostimulator, which sends electrical impulses to specific targets in the brain for the treatment of movement and neuropsychiatric disorders.

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