Trait A. Because the traits population change in years 5 and 10. Hope this helps‼️
I can't see the well but chemical changes happen when a substance combines with another to form a new substance. These processes are called chemical reactions and are not reversible except if you do more chemical reactions... So the well that is changing it's state of matter should be the one undergoing a chemical change. For, example boiling or freezing
Because the plants are blooming to early and they can freeze
