improved water habitats for human recreation.
Answer:
Mesoderm.
Explanation:
The mesoderm is one of the three germinal layers that appears in the third week of embryonic development. It is formed through a process called gastrulation. There are three important components, the paraxial mesoderm, the intermediate mesoderm and the lateral plate mesoderm.
Paraxial mesoderm, also known as presomitic or somitic mesoderm is the area of mesoderm in the neurulating embryo that flanks and forms simultaneously with the neural tube. The cells of this region give rise to somites, blocks of tissue running along both sides of the neural tube, which form muscle and the tissues of the back, including connective tissue and the dermis.
The preschool years largely encompass what Erikson called the initiative vs. guilt stage
A primary function of carbohydrates attached to the glycoproteins and glycolipids of animal cell membranes is to mediate cell-cell recognition. Cell-cell recognition refers to the communication between cells. specific cellular adhesion molecules enable this active process. This process leads to cell organization: <span>some cells adhere to each other and others are excluded.</span>
