Introduction
There are two parts to this essay. #1: two simple machines used in my life. #2: An aspect of nature that has captured my interest and can also be an invention.
Part 1: two simple machines used in my life
Wheel and Axle
The wheel and axle are used in cars, wagons, and almost anything with wheels. A wheel rotates and the axle is connected to the body. This allows the body to move easier. The wheel and axle provides a mechanical advantage. The second link only works with Microsoft Edge | file:///C:/Users/Dylan/AppData/Local/Packages/microsoft.microsoftedge_8wekyb3d8bbwe/AC/#!001/MicrosoftEdge/User/Default/WebNotes/Microsoft-Edge-Web-Notes-green-bla443167609.html
Screw
The screw is used in many things such as buildings, tech, and furniture. The screw is really just a piece of metal that is a cylinder with a head, and threads.
Screw
Picture taken from: https://www.toolstation.com/twinthread-countersunk-pozi-screw/p84863
Part 2: An aspect of nature that has captured my interest and can also be an invention.
A Fish Sub
A fish sub would be a sub that works and looks like a fish. The eyes would be windows and the mouth would be an exit. The windshield would be a tinted window that is almost invisible to see from the outside.