Just like in humans, radioactive material can damage plant tissues as well as inhibit growth. mutations are possible due to damage caused to the DNA. radioactive material in soil can prevent nutrient from being taken in by plants, causing it to be infertile.
Answer:
I definitely think that is plant, I am not sure about the other ones
Colder climates give the people longer noses so the air has a good time to warm up before going into the lungs. places with more light or sun had more pigmented skin to protect from the rays and getting burned