What is the key idea developed in the paragraph and why is it significant?
nasa’s curiosity rover finds clues to how water shape martian landscape
scientists have yet to prove that lakes existed on mars; this is significant because it establishes the fact that mars is an uninhabitable planet.
earlier mars missions have identified the climate conditions necessary for lakes to exist; this is significant because it scientists understand climate conditions on earth.
earlier mars missions have suggested wet environments existed in the past; this is significant because scientists can use the information to determine how climates formed on earth.
scientists have yet to determine what conditions were necessary for lakes to exist on mars; this is significant because it establishes the need for further research.