Each of the following statements was either true for Mars in the distant past (early Mars) or is true for Mars today. Sort the statements by dragging each into the correct bin.Early Mars (more than 3 billion years ago):
Strong greenhouse effect.
Substantial volcanism and outgassing.
Strong magnetosphere.
Some craters held lakes of water.
Core convection.
Mars Today:
Surface pressure too low for stable liquid water.
Solar wind strips atmospheric gas.
Very weak greenhouse effect.
