The brain is underdeveloped at birth and dovelops more over the firts few years.
D. A consumer buys or trades to receive a commodity available for sale or exchange
Future differences I think
The answer is true. if you don't have body fat your body will not function correctly and you could get diseases easily and you won't live very long. Many may not know that our body fat helps our skin and hair, maintain a normal temperature just think if we were to skinny we would be freezing to death, and our body fat helps cushion our organs and tissues.<span />