Final answer:
The general surface conditions on Mars can be described as desolate and barren, with a landscape marked by its harsh, dry environment and significant geological features, such as large volcanoes and evidence of past water activity.
Step-by-step explanation:
Two adjectives that describe the general surface conditions on Mars are desolate and barren. The surface of Mars presents a landscape with numerous angular rocks and fine-grained, reddish soil. Mars's surface has evolved over time, with changes from having warmer and wetter conditions to becoming a dry and harsh environment devoid of significant liquid water and exposed to intense solar radiation. The planet's geological activities are less pronounced than those on Earth, and potentially evidence of faulting may have been concealed by wind-deposited sediment. Mars also exhibits features such as heavily cratered highlands, extensive volcanic plains, large volcanoes like Olympus Mons, the vast Valles Marineris canyons, and evidence of frozen water below the surface which indicates a history of liquid water.