Which feature indicated a period of heavy bombardment followed by a period of low bombardment in our solar systems?

The low crater density of the lunar maria.

Crater density and the lunar marina.

Explanation:

The heavy bombardment or the lunar cataclysm is a hypothesis that said to have been occurred about 4.1 to 3.8 billion years ago and it corresponds with the Eoarchean periods of the earth which have been found as ancient crater remains in earth surface.  During which the asteroids were theorist to have been collided with the terrestrial earth and evidences for this comes of the radiometric dating pf the rocks that were formed during the collision of the asteroids and the comets.

May consider a group  g=({0,1},+)g=({0,1},+)where  ++  will work as the xor operator like we work in boolean algebra. note here, that ‘00’ and ‘11’ are not the usual 0 and 1 that we work with everyday. the elements are  called  ‘00’ and ‘11’ and  may not mean  zero (nothing) and one (single). ‘00’ is the identity for the given binary operator +, meaning that any element operated with ‘00’ gets us that element itself.  for a set  ss  in  g′g′  having more elements than just  {0,1}{0,1}  the values for  a+b∈sa+b∈s, such that  a∈s,b∈sa∈s,b∈s, have to be first defined, only then can you determine the value of  1+11+1. the answer could possibly have been  22  if oanswer is25,000

Nation of conflicting ethnic groups