2. Certainly: adv. Without doudt, secure a situation. 

3. Concocted: verb. create new ways of acting

4. Dyeing: verb. To change  the colour of sth, especially by using a special liquid or substance. 

5. Harmless: adj. unable or unlikely to cause damage or harm.

6. Higher: adj. measuring a long distance from the bottom to the top. 

7. Knowing:  adj. usually before noun. Showing that you know or understand about sth that is supposed to be secret. 

8. Packaging: noun. Materials used to wrap or protect goods that are sold in shops. 

9. Purposefully: adj. having a usefull purpose, acting with a clear aim and with determination. 

10. Ratio: noun. The relationship between two groups of people or things that is represented by two numbers showing how much larger one group is that the other.

 

2. Unnecessary: indica que algo no es necesario

3. Discarded: indica que algo no es necesario

4. Biodegradable: indica la degradacion de algo con componentes naturales

5. impurities: indica algo que no es puro

2. Useful: algo que sirve

3. Easily: indica que algo se puede hacer de forma fácil

4. Environmentally: indica que algo se puede hacer pensando en el ambiente

5. Essentially: indica que algo es importante

But: of contrast. seeks to establish the difference between the need and the damage of plastic

For example: of illustration. seeks to give an example of the use and destination of an object

Is important: of emphasis, seeks to give importance to the environmental and economic impact

Otherwise: of concession. seeks to establish a contrast of the use of waste