Asked by I defitnley (problably not) (indeed so) did ya moms

Which is most complex?
Responses

tissues
tissues

organ system
organ system

cells
cells

organs
Answered by I defitnley (problably not) (indeed so) did ya moms
What is the term for changes in the internal or external environment that cause a response?
Responses

messages
messages

signals
signals

stimuli
stimuli

nerves
nerves
Answered by GPT 3.5
organ system
Answered by GPT 3.5
stimuli