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soldi70 [24.7K]
3 years ago
11

What is the starting material that plastics are made from?

Biology
2 answers:
Anuta_ua [19.1K]3 years ago
6 0
The "plastics" come from oil seeing as that is the only thing on the list.
Ipatiy [6.2K]3 years ago
3 0
<span>The term “plastics” includes materials composed of various elements such as carbon, hydrogen, oxygen, nitrogen, chlorine, and sulfur. Plastics typically have high molecular weight, meaning each molecule can have thousands of atoms bound together. Naturally occurring materials, such as wood, horn and rosin, are also composed of molecules of high molecular weight. The manufactured or synthetic plastics are often designed to mimic the properties of natural materials. Plastics, also called polymers, are produced by the conversion of natural products or by the synthesis from primary chemicals generally coming from oil, natural gas, or coal. </span>
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Assume that the body has been sectioned along three planes: (1) a median plane, (2) a frontal plane, and (3) a transverse plane
Anit [1.1K]

Answer:

lungs and kidneys

Explanation:

The median plane divides the body into two halves through a mid line.

The transverse plain is also known as the axial plane and it divided the body into the upper part and a lower part.

The frontal plane is also known as the coronal plane. It divided the body into the dorsal and ventral sections. The dorsal and ventral sections are the front and back sections ( belly and back).

Lungs and kidneys are the only parts which cannot be seen through all the three plains.

6 0
4 years ago
Energy sustainability can best be achieved by using ______. a. nonrenewable energy sources b. renewable energy sources c. carbon
Natali5045456 [20]

Answer:

Energy sustainability can best be achieved by using the renewable resources.

The renewable resources are the resources like water, wind and sun that can be renewed again and again after it is consumed once.

The term sustainability can be defined as the resources that can be used in the present generation and can be saved for the future generations as well.

So, sustainability can be best achieved when renewable resources are used.

8 0
4 years ago
The sternocleidomastoid muscle extends from the mastoid process of the temporal bone to the sternum and medial clavicle. When bo
grandymaker [24]

Answer:

A Origin

Explanation:

Sternocleidomastoid is the muscle found in the cervical and it’s the largest. It is responsible for the rotation and flexibility of the neck and is a very powerful and tissue-rich muscle.

The sternocleidomastoid muscle extends from the mastoid process of the temporal bone to the sternum and medial clavicle. When both sternocleidomastoid muscles contract, the head is flexed. The end of the muscle called ORIGIN connects to the sternum.

4 0
3 years ago
What do you mean by germ cell<br><br>​
Svetach [21]

Answer: they are sex cells

Explanation:

  • organisms have two types of cells: somatic(body) cells and germ(sex) cells.
  • Somatic cells are basically all cells <em>except</em> for germ cells.
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6 0
3 years ago
About 43% of blood consists of red blood cells.<br><br> true or false
kotykmax [81]

i think it would be true but not 100% sure

8 0
3 years ago
Read 2 more answers
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