Answer: the correct option is : highly developed cell- cell communication.
Explanation: In complex multicellular organisms, cell - cell communication also known as cell signalling is part of any communication process that leads basic activities of cells and coordinates multiple cell functions.
Forming an hypothesis, gathering materials, performing your experiment, and determining the conclusion. Also determining independent and dependent variables could be one depending on the teacher. Sorry if I’m wrong!
Answer:
seasons are caused by revolutions. hope this helps
The answer I believe is number 1