Pls what is hamfulcolour

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

Answer the following question in 3-4 sentences. what is the above image of? why was it created

4/5 of a number is 64 find the number