Petroleum Products
Petroleum and its products are mainly composed of carbon polymers (chains), as the backbone, with different structural and functional groups. Plastic, for example, is made of polypropylene and polybutylene which is mainly made of carbon atoms, whose monomers are linked in a chain to form polymers that make up the products.
Synthetic rubber on the other hand is made of copolymers of carbon and other addictives such as styrene. Synthetic fiber is made of nylon that is composed of a copolymer between carboxylic acid and amides.
Food webs with fewer species are more sensitive to the loss of species and ecosystem disturbances
Aristotle
According to Aristotle "Happiness is the meaning and purpose of life, the whole aim and end of human existence"
<h3>What is Happiness ?</h3>
Happiness is a life that is being well led through virtue, living well and acting well.
- Happiness depends on ourselves.” More than anybody else, Aristotle enshrines happiness as a central purpose of human life and a goal in itself.
- Aristotle tells us that the most important factor in the effort to achieve happiness is to have a good moral character — what he calls “complete virtue.”
- But being virtuous is not a passive state: one must act in accordance with virtue.
Learn more about Happiness here:
brainly.com/question/7292814
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The answer to this question is A
prokaryotic cells do not have a nucleus.
