West Siberian Plain, Russian Zapadno-sibirskaya Ravnina, one of the world's largest regions of continuous flatland, central Russia. It occupies an area of nearly 1,200,000 square miles (3,000,000 square km) between the Ural Mountains in the west and the Yenisey River valley in the east.
If a deep-ocean trench is located adjacent to a continent, active volcanoes would likely be found landward from the trench.
Shield this is the answer
Answer: Dormancy
The phenomenon wherein the leaves of the plants turn red and fall during the autumn season followed by the defoliation of trees is a concrete example of dormancy. Dormancy refers to the time wherein plants don't grow and wait for necessary environmental factors like moisture, temperature and others.
The northern is most likely tropical climate