The purpose of this feedback would be to deliver the baby.
Uterine contraction will cause the release of oxytocin that in turn will increase the uterine contraction too. This mechanism is called positive feedback because the effect will keep increasing as the time pass. This mechanism will be over when the objective is completed, in this case when the baby delivered.
Answer:
Sound travels better through solids than through air.
Explanation:
Think about being in the pool: you can hear a lot of things, albeit muffled a little. Or think about tapping a really long pole, and someone standing far away can hear the vibration or the noise while touching the pole.
Solids are more tightly packed together. Sound needs a medium to travel though, and anything with densely packed atoms is better than loosely packed. The hierarchy is solid > liquid > air. Kinda funny that we do most of our talking through air.
Answer:
Lysosomes are responsible for cleaning and removing waste.