What is the meaning of the word 'tessellation?

In what ways does a cell function like a small city or factory

The caves at lascaux were closed in 1963 because a. vandals were destroying the paintings b. the collective breath of the many visitors caused the paintings to corrode c. the weather was destroying the paintings d. the government of france wanted scholars to be able to study the work without distraction

Blind contour line drawings are : a. often used to paint landscapes b. often detailed but not perfect c. often detailed and flawless