The dermis is a layer of skin between the epidermis (with which it makes up the cutis) and subcutaneous tissues, that consists of connective tissue and cushions the body from stress and strain.t also contains Mechanoreceptors that provide the sense of touch and thermoreceptors that provide the sense of heat. In addition, hair follicles, sweat glands, sebaceous glands, apocrine glands, lymphatic vessels and blood vessels are present in the dermis.
1.1 DEFINITION. Aquaculture is the farming of aquatic organisms, including fish, molluscs, crustaceans and plants. It implies some form of intervention in the rearing process to increase production, such as regular stocking, feeding and protection against predators.
Aquaponics is the ideal answer to a fish farmers problem of disposing of nutrient rich water and a hydroponic growers need for nutrient rich water. Given the nature of recirculating aquaculture and hydroponics, the two technologies combined in aquaponics, there are 2 consistent factors in all aquaponic systems. 1. Fish are raised in tanks.