The plastic and its usage has its supporters and critics, with both making good points, as the plastic is a material that both has its big advantages, but also its big disadvantages.
The main advantages of the plastic is that it is very cheap, the products with it are very easy for production, and it can be recycled numerous times. Also, it is very easy and practical for usage.
The main disadvantages are that the plastic needs lot of time to dissolve, depending on the type of plastic it can be anywhere from few hundred to few thousands years. Also, when it disposes it releases a lot toxic chemicals into the soil, and those chemicals are very harmful for the living organisms.
Big problem is also that most of the plastic is not being recycled, but it is thrown away, so there's enormous plastic waste everywhere in the world. Big portion of it is burned, and by burning it lot of toxic chemicals are released into the air, and that causes lot of pollution.
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The lunar phase or phase of the Moon is the shape of the directly sunlit portion of the Moon as viewed from Earth. The lunar phases gradually and cyclically change over the period of a month (about 29.5 days), as the orbital positions of the Moon around Earth and of Earth around the Sun shift.
The Moon's rotation is tidally locked by Earth's gravity; therefore, most of the same lunar side always faces Earth. This near side is variously sunlit, depending on the position of the Moon in its orbit. Thus, the sunlit portion of this face can vary from 0% (at new moon) to 100% (at full moon). The lunar terminator is the boundary between the illuminated and darkened hemispheres.
Each of the four "intermediate" lunar phases (see below) is around 7.4 days, but this varies slightly due to the elliptical shape of the Moon's orbit. Aside from some craters near the lunar poles, such as Shoemaker, all parts of the Moon see around 14.77 days of daylight, followed by 14.77 days of "night". (The side of the Moon facing away from Earth is sometimes called the "dark side of the Moon", although that is a misnomer.)
Take what you want from that. Don't plagerize.
Answer:
There are three amino acids that have basic side chains at neutral pH. These are arginine (Arg), lysine (Lys), and histidine (His). Their side chains contain nitrogen and resemble ammonia, which is a base. Their pKa's are high enough that they tend to bind protons, gaining a positive charge in the process.
Explanation:
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