Answer: Option A) Cells
Explanation:
The soft lining inside the mouth is an example of cell.
The inner lining of mouth is made up of the mucous membrane. Soft lining is consist of squamous epithelium also called as oral epithelium, which is a type of cell.
Epithilial cells are arranged in layers upon a basal membrane. It function to protect mouth against abrasion.
Hence the correct option is A) cells.
The respiratory system consists of all the organs involved in breathing. These include the nose, pharynx, larynx, trachea, bronchi and lungs. ... The nose, pharynx, larynx, trachea and bronchi all work like a system of pipes through which the air is funnelled down into our lungs.
LIpids
Protein
Nucleic Acid
carbohydates
Lipids are commonly refers to as fats and they contain the most energy because when body burn lipids for fuel, it released more energy when compared to other organic compounds. Also, they come into the body in different forms.
Nucleic acids are DNA and RNA respectively and they make the proteins that are present in almost every structure and perform every function in the body.
Carbohydrates are the largest number of organic molecules present in the body. Thus, carbohydrates are sugars and the simplest sugar is glucose which provides fuel for many organisms including human.
Protein is the most versatile of all organic molecules by making up the structures and performs various functions within organisms. Proteins are made by building block known as amino acids.
2. Some common examples include soil erosion or drastically changed climate patterns, particularly where it concerns agriculture.