The Nervous System and The Endocrine System.
Answer:
a human and appropriate body part is head, neck, back, hips
Explanation:
Answer:
Its Euglena
Explanation:
Shape change from normal elongated egg-shape to round-shape in stressful environment. These shape changes attain two transition phases. The I-transition phase is reversible where the organism can return to normal if favourable environment persists.
