Opposites are called antonyms. Some examples are:
battery
The direct opposite; such as stating one part of a sentence against another part of the same statement. Example (from a US Revolutionary War hero): "Give me liberty, or give me death."
the sub-prime mortgate in Us last 2 years was a good example.
The opposite may be "useless." Context opposites may be unsuitable, or worthless, or unhelpful.
There are four edges that join this side to the opposite side.They are all equal length. That could give us a clue.The distance between two opposite sides is just the length of any edge of the cube.
I am looking for few examples of exploratory research.
Assuming you are referring to US states, North / South could be Alaska and Florida. East / West could be California and Massachusetts.
Other examples of the ecosystem are trees, water, plants, and humans. These are examples od an ecosystem because we rely on trees to give us oxygen, plants rely on us to give them Carbon dioxide, both trees and plants depend on water, and animals depend on plants to eat.
we give those japanese s**t till they could eat
Atmosphere acts as a blanket of air above us. It protects us and give us the air to breathe.
Me / You Us / Them
Denial and Isolation. An example of this would be to deny the reality of the situation. Another stage would be anger. Examples would be to direct the anger at inanimate objects or complete strangers. Feeling guilty for being angry and then that could make us more angry.