Early in development, the tissue that becomes the nervous system forms the neural then the neural and finally the neural

The neurula is the state of the embryonic development, in which the process of the neurulation takes place. The neurulation is the process of the development of the nervous system in the embryo.

The process of the neurulation starts with the development of the plate. After the formation of the neural tube is complete, the neural grove is formed. The neural groove forms a circular tube and result in the formation of the neural tube in the embryo.

The correct answer is:

Early in development, the tissue that becomes the nervous system forms the neural plate, then the neural groove and finally the neural tube.

allowed for the prediction of the properties of missing elements.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.