Answer:
a cell
Explanation:
its the most basic unit of life itself and the nervous system is made up of neurons and glial cells
Cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction. With continual improvements made to microscopes over time, magnification technology advanced enough to discover cells in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology. Over a century later, many debates about cells began amongst scientists. Most of these debates involved the nature of cellular regeneration, and the idea of cells as a fundamental unit of life. Cell theory was eventually formulated in 1839. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchowcontributed to the theory. It was an important step in the movement away from spontaneous generation.
The three tenets to the cell theory are as described below:
All living organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells arise from pre-existing cells.
The first of these tenets is disputed, as non-cellular entities such as viruses are sometimes considered life-forms.
All living things are made of cells. Answer
It's mixture.
Take salt water for example. The salt is mixed, or dissolved, in the water. To get the salt by itself, you could evaporate the water by boiling the mixture
<span>Option A. Aggregate demand is equal to the gross income that is related to the circular flow with the income and expenditure within a certain economy that has an origin and a destination. These are the aims and objectives so that the demand for production is created and the gross domestic product is generated, which is the total demand for domestic production, which is composed of all the given variables.</span>
The sperm and egg begin fertilization by meeting up and joijmning in the Fallopian Tubes.
