To thank of the posabillatis
Answer: Earth's seasons are caused by it's tilt on it's axis :)
Explanation:
An unspecialized cell that can divide and give rise to different specialized cells is called a stem cell (Figure above). Zygotes and embryonic cells are both types of stem cells. These stem cells, called embryonic stem cells, can divide indefinitely and can specialize into any cell type. They are totipotent.
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