The answers are: A. Heavy rain, and B. Ice and snow. The two weather events will be a real danger for the town and it's inhabitants. The heavy rain will bring down large amounts of water and make flooding's, as well as bringing down rocks, and make landslides. The ice and snow will contribute to faster erosion and breaking of the rocks that will move downwards, and also avalanches.
Biological Fitness, also called darwinian fitness, means the ability to survive to reproductive age, find a mate, and produce offspring. basically, the more offspring an organism produces during its lifetime, the greater its biological fitness.
