Little Harold overcame his fear of water after two bullies had held him under the water. Although he swam the rest of the season without noticeable fear, on the first day of swimming the next summer, he began to cry and said he was scared. What had occurred?

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

matthias schleiden

robert hooke

rudolph virchow

anton van leeuwenhoek

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

digestion

it excretes wastes