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.
Answer:
The pectoralis muscle moves the front limb inward and the transverse abdominal muscles moves the posterior limiting membrane up. The limbs are brought into the shell, pushing up on the lung, causing air to expel by the muscles contracting.
To Breathe air in, the serrates muscle pulls out, the abdominal oblique pulls down and the weight of the viscera allows air to flow in, via negative pressure.
Explanation:
hope this helps you if not sorry :)
Answer:
d
Explanation:
it takes the weight of that much ice to cause the plastic to flow.
Answer: Pteridophyte
You classify the plant as a pteridophyte
Explanation:
Pteridophytes are known to have the following:
- many cells (multicellular) and vascular bundles
- true roots, stems, and leaves
- do not produce flower throughout their lifespan
- they are mainly terrestrial plants, while few are aquatic
- do not produce seeds but reproduce asexually by formation of spores
Examples are ferns
