What are some similarities between grassland and tundra

The grasslands are more plentiful in crops like hay, wheat, oats and etc. The grasslands are easier to live in. Tundra is colder, more volcanic activity, harsher conditions to live in. The grasslands and Tundra have similarities on how they have both wildlife, grassland, and area to grow. Grasslands are more plentiful, cause their is more rain and the summers are longer. Hope that helped!