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Mamont248 [21]
3 years ago
8

Plastics, synthetic fabrics, and synthetic rubber are composed of chemicals that are derived from

Biology
1 answer:
SVEN [57.7K]3 years ago
3 0
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.
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___ It’s a nice sunny day with no clouds but it is very cold outside
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Answer:

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3 years ago
A permineralized piece of wood
butalik [34]

Answer:

A per mineralized  piece of wood is known as the "petrified wood."

Explanation:

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7 0
3 years ago
G you extracted your dna from cheek cells. the concentration of your dna sample is 250 ng/μl. the dna template for pcr should be
Karo-lina-s [1.5K]
You should mix 4µl of DNA sample and complete it with 96µl (100-4) of water.

You can figure this out by using  C1.V1 = C2.V2
C1 = 250 <span>ng/μl (Sample Concentration)
</span>V1 = ?          (the necessary volume to take from the DNA sample)
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V1 = \frac{C2 . V2}{C1} = \frac{10 . 100}{250} = 4µl

For the water: 100µl (total volume) = 4µl + Water
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6 0
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microorganisms play key roles in the cycling of important nutrients in plant nutrition, particularly those of microorganisms pla
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Microorganisms play key roles in the cycling of important nutrients in plant nutrition, particularly those of microorganisms play key roles in the cycling of important nutrients in plant nutrition, particularly those of carbon, nitrogen and sulfur.

<h3>What is Microorganisms?</h3>

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Ancient texts like the Jain scriptures from India's sixth century BC raised the specter of the potential existence of invisible microscopic life. In the 1670s, Anton van Leeuwenhoek used a microscope to observe microorganisms, which marked the beginning of the scientific study of microbes. Louis Pasteur disproved the hypothesis of spontaneous generation in the 1850s by discovering that bacteria were to blame for food degradation. Robert Koch determined in the 1880s that bacteria were to blame for tuberculosis, cholera, diphtheria, and anthrax.

To learn more about microorganisms visit:

brainly.com/question/6699104

#SPJ4

6 0
2 years ago
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