Answers the questions below I will give brainliest to whoever answers correctly or close try your best if your unsure don't answer yet, do some research if needed! this is a really easy question, I just want to see creative answers

good luck!

A- They both orbit around the sun, however they have different time periods.

B- It is believed that both planets share a common origin forming at the same time out of a condensing nebulosity around 4.5 billion years ago.

C- both earth and mars have canyons valleys and craters.

2- because it has no atmosphere to trap the heat that it radiates.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."