Although all neurons are different, they do have some characteristics in common. What are these characteristics

A cell body, an axon, and dendrites.

Explanation:

The similar characteristics of different neurons is their body structure which have the common parts in all neurons. All neurons have three essential parts i.e. a cell body, an axon, and dendrites. Neurons different in size, shape, and structure due to different in their role and location but all these different neurons have the same components of its structure such as  cell body, an axon, and dendrites.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.