4. During lactation (milk production), the suckling by the baby stimulates the production of hormone oxytocin, which in turn causes contraction of smooth muscle surrounding the milk ducts,
causing milk to flow. The flow of milk increases the suckling by the baby and more oxytocin is
produced
What is the stimulus?
What is the effector?
What is the response?
Is this a negative or positive feedback?

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?