Mainly French and English
They used electronic surveillance meaning they were able to listen to phone calls, reading emails and text messages etc.
The correct answer is Glial cells; neurons
Glial cells are part of the nervous system. They are auxiliary cells that have the function of supporting the functioning of the central nervous system (CNS). It is estimated that there are 10 glia cells in the CNS for each neuron, but due to their small size, they occupy half the volume of nervous tissue. They differ in form and function and they are: oligodendrocytes, astrocytes, Schwann cells, ependymal cells and microglia.
Neurons are cells present in the nervous system and their main function is to conduct so-called nerve impulses. Although they are not the only cells in our nervous tissue, they stand out as the best known.
