but it also figures strongly in a number of other everyday items like food and drinks containers. It’s one of the plastics which lends itself best to recycling, but the best way to
Plastic bags may be convenient, but their impact on the environment is significant. It is important to be aware of the material used to make these bags and to consider alternatives that are more sustainable. By using reusable bags and reduc...
Plastics are made of synthetic materials like polyethylene and polypropylene. These materials are derived from petroleum, which is a fossil fuel. Plastics can be molded into different shapes and sizes, which makes them useful for a variety of applications. The production of plastics has increased ...
可以用What is your shoes made of ?.因为它是特指的.所以用is.译为:你的鞋子是用什么做的?回答:It's made of (材料.如:leather，皮革.draper,布,等)made from 是指那里制造的.如.My shoes made from the USA.
Over 30,000 substances have been tested for use as a polymer plasticizer, though today, only about 50 are available for use. Of these, they are divided into four families: Phthalates,which are used for flexibility in plastics Dicarbonatesare used in shaping PVC at lower temperatures; ...
Now scientists are trying to make "green" materials to take the place of plastics. In our daily lives, we should use fewer plastics. If everyone takes action, the world will be different.现在,科学家们正努力制造“绿色”材料来代替塑料。在我们的日常生活中,我们应该少用塑料。如果每个人都采取...
The small particles from degradation can quickly spread through the environment — think air, ocean or the belly of hungry animals who mistake plastic fragments for food. Can't We Just Reuse Single-use Plastic? Another reason many countries are prohibiting single-use plastics is because they ...
And, whether or not the packaging is of the appropriate size, several types of materials have traditionally been used for a single parcel: for example, tape, cardboard boxes, styrofoam padding and bubble wrap. Many of these packaging materials are composed of plastics. In...
高中化学必修一同步提高课程课后练习 Unit 5 What are the shirts made of课后练习 把下列的主动句变为被动句。 I open the door every morning. Mr. Green often invites me to his house. I hand out some papers to you. 把下列的主动句变为被动句。 I often tell my son stories . This factory pro...
One benefit of PLA, when compared with plastics, is that it is made from renewable resources. Rather than crude oil, PLA requires crops that can be grown year after year. What’s more, these crops draw down carbon when they are grown, so are pulling greenhouse gases out of the atmosphere...