The shells close due to the two adductor muscles. It is their contraction that allows the shell to close. All clams (with the exception of the scallop) do not have eyes. However they do have a heart, kidneys, an anus and a mouth. These organs are always present, regardless of the size of a clam.
The average annual salary of a certified nurse midwife is $91,070. The highest paid nurse midwives earn around $119,690, while the lowest paid come in around $62,480 per year. The average hourly salary for certified nurse midwives ranges from $30.04 to $57.55 with the median at $43.08 per hour.
Midwifeâs salary working in the United States is ranging from $30,913 to $108,903 per annum. A new midwife can receive a starting yearly minimum pay of around $31,000. As a midwife becomes known, the yearly rate increases considerably.A Midwife can receive around $110,000 salary including bonuses.idwifeâs salary working in the United States is ranging from $30,913 to $108,903 per annum. A new midwife can receive a starting yearly minimum pay of around $31,000. As a midwife becomes known, the yearly rate increases considerably. A Midwife can receive around $110,000 salary including bonuses.