1. the two main parts (organs) of the central nervous system are the and

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:

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

they kick it to the curb.

explanation:

that current was nasty.