Here's why:

* Connective tissue is characterized by cells that are not tightly packed together. Instead, they are embedded within a matrix composed of extracellular material. This matrix can be composed of fibers (like collagen and elastin) and ground substance (a fluid or gel-like material).

* Examples of connective tissue:

* Blood: Cells (red blood cells, white blood cells, platelets) are suspended in plasma.

* Cartilage: Chondrocytes are scattered within a firm, gel-like matrix.

* Bone: Osteocytes are located in lacunae (spaces) within a hard, mineralized matrix.

* Loose connective tissue: Fibroblasts, macrophages, and other cells are scattered in a gel-like matrix with fibers.

In contrast, other tissue groups have cells that are more closely packed:

* Epithelial tissue: Cells are tightly joined together to form sheets that cover surfaces.

* Muscle tissue: Cells are arranged in bundles or sheets, often with specialized structures for contraction.

* Nervous tissue: Neurons are interconnected and communicate with each other through synapses.