Which of the following is a reasonable hypothesis for how Valles Marineris formed on Mars?

Which of the following is a reasonable hypothesis for how Valles Marineris formed on Mars? It was created by tectonic cracking. The martian surface is usually divided into regions of three different age ranges (early, middle, and recent). How do we decide in which age range a region belongs?

What happened to all the water on Mars Why did this happen?

Much of Mars’s water has disappeared since the planet formed. Planetary scientists suspect most was split into oxygen and hydrogen in the atmosphere, and the hydrogen lost to space. A new modelling study suggests if Mars did once have vast amounts of water, the majority is now locked in minerals in the planet’s crust.

Can humans change or adjust to Mars?

Definitely not. Genes to help deal with radiation and low gravity aren’t impossible, and eventually humans would probably evolve these adaptations. But evolution won’t help us with the Martian atmosphere. Mars has almost no atmosphere and none of it is oxygen, which means that it is 100 per cent fatal to everyone.

What if Mars was in the habitable zone?

If Mars were the size of Earth and Venus, it would have enough gravity to hold onto an atmosphere and it’d still have a very hot core (hot enough to keep nickel / iron liquid) and so generate a magentic field like Earth, which would also help to keep the atmosphere.

What is Valles Marineris on Mars?

The Valles Marineris canyon is a gigantic tectonic crack in the Martian surface smoothed out and broadened by erosion from wind and possibly water. The canyon is more than 2,500 miles (4,000 kilometers) long and 5 miles (8 km) deep, making it 10 times longer and five times deeper than Arizona’s Grand Canyon.

What are the scars on Mars?

A ragged geological scar crosses the belly of Mars. Long enough to reach from New York City to Los Angeles, this great rift in the martian crust is named Valles Marineris, or Mariner Valley. It was discovered in 1972 by the Mariner 9 spacecraft.