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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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Antidiuretic hormone A) increases the permeability of the collecting ducts to water by increasing the number of aquaporins. B) i
bazaltina [42]

Answer:

A) increases the permeability of the collecting ducts to water by increasing the number of aquaporins.

Explanation:

ADH is an hormone of the anterior pituitary gland  concern with osmoregualtion. When the solute potential of the blood rises , with decrease in water potential , the   water levels of the blood drops, the osmoreceptors in the hypothalamus sensed this from the circulatory blood and  prompted  the hypothalamus to stimulate the anterior pituitary gland to secrete ADH.

The  hormone is carried in the circulating blood to the walls of the collecting ducts where it binds with the receptors on the walls of the tubule,which increases the fusing and  binding of Aquaporins to the membrane of the collecting ducts to increase re absorption of water back into the blood, raising the water potential of the blood.

5 0
3 years ago
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What environmental worldview is seen by critics as focused on short-term economic benefits with little regard for long term harm
attashe74 [19]
I believe the answer is the global free-market approach.
It is because on continually increasing use of earth's natural capital, and it focuses on short term economic benefits with little regard for degradation and depletion of natural capital and resulting long-term harmful environmental, health, and social consequences. Environmental world views are the ways of thinking about how the world work and beliefs that people hold about their roles in the natural world, another factor is widespread lack of understanding of how earth's life-support system works, keeps us alive, and supports economies. 
6 0
4 years ago
Fishermen have harvested certain fish to the
Leona [35]
There are two possibilities It would be 2 and 4 because for 2 if that fish ate another fish then the ecosystem would be damaged and it would be 4 because without that fish eating the other fish the population would go crazy
4 0
3 years ago
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11. What's a recharge area?
Greeley [361]

Answer:

B. The part of an aquifer where surface water reaches the water table

Explanation:

The recharge area of an aquifer, is the area where the aquifer comes in touch with the surface water. At this area, the aquifer is receiving new and fresh water reserves from the surface, thus replenishing the water that it has lost.  Most of this water comes from the rainfall and runoff, though rivers and streams can also contribute to it. The recharging of the aquifer is crucial for its existence, as it constantly loses water, and the recharging in giving back water to it, thus balancing the lost and gained water in it.

8 0
3 years ago
What does xylem carry up the plant?
antoniya [11.8K]

<em><u>Xylem</u></em> is a part of <em><u>Vascular bundle </u></em>which carry up <em><u>water</u></em> and <em><u>minerals</u></em> from roots of plant to its leaves.

So, the required answer is :

=》A. <em><u>Water and minerals</u></em>

4 0
3 years ago
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