Answer:
b. hibernation to lower metabolism in the winter
Explanation:
Tundra, besides the one I live in apparently, are very, very dry because of the cold. This means that it may be helpful to hibernate for the part of the year where it is even too cold for plants and other animals.
Recessive traits thats what they are called
Answer: C - Tolerance
your brain needs oxygen to think and your lungs need oxygen to live and keep your body going
i think not for sure tho
Answer: Earth's seasons are caused by it's tilt on it's axis :)
