I'm pretty sure they are reffering to Alzheimers.
Answer:
Peduncle
Explanation:
The Caudal Peduncle or Peduncle in this case is the muscular region that is found between the dorsal and an.al fins.
This Peduncle helps the fish to swim and navigate the currents in the water.
It helps to propel the fish to move quickly through water as it acts like a motor.
Answer;
-Simple squamous epithelium
Explanation;
-Simple squamous epithelium is the single layer of thin, flat cells that line body surfaces which are not exposed substantially abrasive forces. The primary function of the columnar cell is that secretion and absorption simple squamous epithelium a single layer flat scale shaped cells.
-Simple squamous epithelium lines the air sacs, or alveoli, of the lungs. The alveoli are sites where air is exchanged in the lungs. Simple squamous epithelial cells in the alveoli allow oxygen from the air to enter the blood in the capillaries of the lung.
You can use scientific inquiry to answer the questions 'Why is the sky blue?' and 'Why do diseases exist?' because science can help you explore and prove them while you can't prove, at least not in this way, why bad things happen... ☺