Help me give this answer bord near 12)Give reasons:

a)mining leads to pollution

b)fossils fuel on burning create air pollution.

c)dams do not always have positive effects​

too hard:

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: