How much similarity can be seen between the current body plans of organisms and the body plans seen in fossils from the Cambrian Period?

There is considerable similarity in the body plans of ancient animals and today’s
animals. The basic body plan of the elephant was evident in the tiny pikaia, a
small swimming animal. The body plan of this animal was passed on to fish,
amphibians, reptiles, birds and mammals.

Can someone put the answer in there own words!

Name the part of the the brain labeled "e".

This patient undergoes a gallbladder sonogram due to epigastric pain. the report indicates that the visualized portions of the liver are normal. no free fluid noted within morisons pouch. the gallbladder is identified and is empty no evidence of wall thickening or surrounding fluid is seen there is no ductal dilation. the common hepatic duct and common bile duct measure 0.4 and 0.8 cm respectively. the common bile ductmeasurement is at the upper limits of normal what cpt code in icd-10 cm code was used

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these