Which of the following is a function of the vertebral column? Select one: a. It supports the weight of the body. b. It allows spinal nerves to exit the spinal cord. c. It serves as a passageway for the cranial nerves. d. It contains numerous foramens for the passageway of blood vessels. e. It protects the brain.

b. It allows spinal nerves to exit the spinal cord.

Explanation:

The vertebral column is an important characteristic of vertebrates. The formation of the vertebral column takes place from the notochord in the vertebrate. The vertebral column is also known as the spine or generally called the backbone. It forms the spinal canal that is responsible to provide protection to the spinal cord. The vertebral column is divided into many regions into human beings and some other organisms according to its function and position. It has many functions such as protection of the spinal cord, allow passes of spinal nerves and some other.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.