On a summer camping on the coast trip, Maria and her family hunted for sharks teeth. Sharks teeth are fossilized remains of anci
ent sharks that trolled the waters for prey. To their surprise they found other fossil remains, remains that changed as they dug farther from the shore. A sample of the fossils they found are seen here. What do the fossils tell us about the area? A) All life once lived in the oceans. B) The climate changed over the years. C) It was once underwater; now it is not. D) The habitat stayed the same; the animal species changed.
Peristalsis is simply a series of muscle contractions, these contractions occur in the digestive tract
Peristalsis is also observed in the tubes that connect the kidneys to the bladder
Peristalsis is an automatic and important process which moves: food through the digestive system, urine from the kidneys into the bladder and bile from the gallbladder into the duodenum
Peristalsis is a normal function of the body and can sometimes be felt in the belly (abdomen) as gas moves along
