What is high level language ?
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Explanation:

Wake up to reality! Nothing ever goes as planned in this accursed world. The longer you live the more you will realize that the only things that exist in this reality are merely pain, suffering and futility. Listen. Everywhere you look in this world, wherever there is light there will always be shadows to be found as well. As long as there is a concept of victors the vanquished will also exist. The selfish intent of wanting to preserve peace imitates wars. And hatred is born in order to protect love. There are nexuses, casual relationships that cannot be separated normally.”

High level language is a programming language that is closer to human language than machine language. Thus, it is far easier to read/understand than low level languages.

ex) Python, C#

Explanation:

Sea urchins have a unique relationship of oxygen and carbon-di-oxide.

Explanation:

Sea Urchins spread oxygen in a unique way. They take in oxygen by staying inside water. Oxygen enters the body through their gills and tubed feet. CO2, which is waste is released through the anus. They get oxygen only through diffusion, i.e. diffusion of oxygen into the organism. Oxygen diffuses in body through the canals and carbon dioxide diffuses back into the canals. Urchins also have the capability to cope up with rising CO2 levels in the sea.