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They survived by moving to new areas.
We have two parts working for our central nervous system. The brain: it serves as the main control of the human body, it receives information from our senses and provides reaction. The spinal cord: this play a vital role to distribute all neurons throughout, it serves as a connection to provide transmission.
D) Amphibia was considered to be the first to develop lungs
Answer:
Explanation: by interacting with the excretory system