If the red trait is DOMINANT and you cross a red rose (Rr) with a white rose (rr), the genotype of the offspring will be: Remember punnett square

Idon't know how to do this but maybe ask your mom or dad

Answer : romans built laws to manage the pollution which was lead by smoke produced by the factories.

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.

Streaks on the face of wave rock

Although i don't know what is the simulated system, starfish are predators that eat mostly  microalgae,  snails, sponges, bivalves, mussels and other small marine animals. removing starfish from any system would definitely increase this animals that they prey.