Final answer:
Mountainous terrain in Russia's physical geography best explains the limited agricultural development in much of the country.
Step-by-step explanation:
In addition to climate, mountainous terrain is another characteristic of Russia's physical geography that best explains the limited agricultural development in much of the Russian domain. The presence of mountain ranges in the south of Russia blocks warm air masses and summer rains from South and Central Asia, resulting in the creation of deserts and steppes. This terrain is not conducive to agriculture and hinders the growth of agricultural activities.