You didn't put any options but an example of biological weather can be the weakening of a substance such as a rock being broken down due to various plants(... so nothing man made). Hope this helps :)
C. is your correct answer.
Skeletal tissue which makes up the skeletal system.
Answer:
Urbanization has environmental and economic advantages for humans, but also substantial disadvantages, including increased problems with physical and mental health/stress, a modified climate, water and energy management, and air pollution.
When molecules of a solvent pass through a semi-permeable membrane from a low concentrated solution to a higher concentrated solution.
