Answer:
The correct definitions are a, c and d
Explanation:
The definitions of system, heat energy and chemical energy are correct but the definition of surrounding is not correct.
Answer:
southern Russia
Explanation:
Tamerlane's battles with the Golden Horde in the 14th century in southern Russia, weakened the Mongol hold in that region. This allowed Russian vassal states to gain power but unable to completely unify, the Russian prince remained vassals of the Mongols until 1480.
hope that answers your question. Give me brainliest if you like the answer
C the shape of rock deforms :))
Between the 1870 and 1900
