It happens in every ecosystem and is natural
The best answer I see is A
please tell me if I´m right
sorry if i am not
Answer:
The nervous system communicates with the rest of the body through the nerves that branch off of the spine.
Answer:
Bacteria and Homo
Explanation:
They have the furthest link with each other
An organ system is a group of organs that work together to perform one or more functions.