cell wall
The stratum corneum is the tough outer layer of the skin.
The tough water repellent epidermal layer is known as the cuticle. It is a waxy layer on the outer surface of plant leaves, stems, and fruits that helps to reduce water loss and protect against environmental stressors such as pests and pathogens.
The outer layer of the eyeball is called the sclera. It is a tough, white, fibrous tissue that helps to maintain the shape of the eye and protect the delicate structures inside.
The sac consists of two layers, the parietal (outer) and visceral (inner) layer
the seed coat
The stratum corneum is the tough outer layer of the skin.
The cell wall
Endoskeleton
The tough water repellent epidermal layer is known as the cuticle. It is a waxy layer on the outer surface of plant leaves, stems, and fruits that helps to reduce water loss and protect against environmental stressors such as pests and pathogens.
anulus fibrosus
The cell wall is the outer coating of the cell. It keeps the shape of the cell rigid.
This is called bark.
the dura
The outer layer of the eyeball is called the sclera. It is a tough, white, fibrous tissue that helps to maintain the shape of the eye and protect the delicate structures inside.
The sac consists of two layers, the parietal (outer) and visceral (inner) layer
The epidermis is tough because it is a dense layer of skin cells held together by keratin, which is a hard protein. The epidermis is the outer layer of the skin.
The outer shell of a watermelon is called the rind or peel. It is the tough outer layer that is typically green in color and protects the fruit inside.