The two distinct layers of the integument consist of a layer of stratified squamous epithelium called the and a deeper layer of areolar and dense irregular connective tissue called the .

Epidermis and Dermis

Explanation:

The two distinct layers of the integument consist of a layer of stratified squamous epithelium called the Epidermis and a deeper layer of areolar and dense irregular connective tissue called the Dermis.

The Epidermis is the outermost layer of the skin while the Dermis can be found under the epidermis and is also known as the thickest layer thereby providing strength to the skin

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before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.