The integumentary system is an organ system consisting of the skin, hair, nails, exocrine glands, and sensory nerves. what is mostly made of dense irregular connective tissue along with nervous tissue and gives the skin its strength and elasticity?

Skin

Explanation:

Skin  is made up of several layer of cells and tissue consisting of several nerve fiber such as sensory , autonomic, sympathetic etc.

However, the skin consists of two main layers

a)  the epidermis - An epidermis is composed of densely  packed epithelial cells

b) Dermis - A dermis is made of dense, irregular connective tissue comprising of numerous blood vessels, hair follicles, sweat glands, and other structures.

After the dermis , the layer of hypodermis is found which is made up of  loose connective and fatty tissues.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.