Peristalsis<span> is a radically symmetrical </span><span> contraction and relaxation of muscles</span><span> that propagates in a wave</span><span> down a tube, in an anterograde direction.</span>
Answer:
Enzymes speed up a chemical reaction making the reaction easier to occur.
The sewing needle should float in the water if placed on a horizontal angle if I remember properly.
I hope this helps in some way.
Plants feed/provide energy to animals And animals create carbon dioxide for plants