What is one technological advancement created by the Romans that is still used today? O catapults
O concrete
O aqueducts
O accounting

aqueducts

Explanation:

An aqueduct is a structure constructed by the Romans which s still in use by modern engineers. It was constructed to transport water from different cities and towns to the places where the availability of water is minimal. The water is distributed to distant places through aqueducts. The Roman aqueduct had proved itself to be a reliable and efficient structure to be used in modern times too. The first aqueduct was built by Romans in 312 BC. The advancement in this discovery helped the Roman cities to rise in terms of water facility, sanitation, and health.

B) CONCRETE

Explanation:

edg

food chain i would say only because there is competition on getting food and survival

darwinism is survival of the fittest there for social darwinism is the survival of the wealthiest