arslanmax
17.12.2020 09:12

To be sure, the mining industry has been environmentally slow. Although great strides have been made (the US has the most environmentally sound mining in the world), the mining industry generally has been very slow to do a better job. The result is mistrust of the industry. Yet, the industry understands the problem as well as anyone. They only need more incentive to be part of the solution, indeed, an environmental leader.
Recycling is sometimes posed as an alternative to mining. This formulation is also the wrong way to frame the issue. To say that mining impacts can be lessened by recycling is true, but recycling is only part of the solution. There will always be a need for new earth materials, particularly if human population continues to grow and less developed countries continue to industrialize.
Toward a Solution
The solution to this problem is to develop new approaches to mining that, individually and collectively, serve to reduce dramatically its impacts – while at the same time improving its efficiency and economics. Economic improvement is critical, because if impact reduction does not involve economic benefit it will not be willingly and widely adopted. Fortunately, there are a number of promising strategies for reducing mining's impact and improving its balance sheet. For example:
Identify and Develop New Chemical Technologies.
The waste rock chemicals from mining and milling can be removed and turned into useful products. Total control over the chemical content of the rock is required. For example, why isn't waste sulfur used to produce acid for the manufacturing industry?
Identify and Develop Co-Products and Processes.
Mines move a lot of rock that winds up as waste. Other mines produce rock that is used as building, construction, and pavement aggregate. An obvious question is why isn't waste rock used as aggregate? The answer may be that new ways of product separation are needed or that new formulations of concrete and asphalt may be required.
Both approaches may be interesting areas of research.

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Ответ:
Romanova33
10.01.2020 11:23

Объяснение:

May I invite my friend to the party? - Yes, you .

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may

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: 1

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won't be able to

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it

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: 1

He go skiing.

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will be able to

Question5

: 1

She going to become an economist.

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is

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: 1

By the time I came she a cake.

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had cooked

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They yet.

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haven't arrived

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: 1

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discuss

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: 1

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yourself

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: 1

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is raining

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: 1

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make

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: 1

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your sister want to buy a new radio-set?

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They start selling the product in Hungary next year.

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Ответ:
Екатерина270604
10.01.2020 11:23

1) 1. historic 
2.  creative 
3. Talkative, cultural
4. Russian (с артиклем будет являться существительным), humorous 
2) 1. b) to close
2. b) to read c) reading – обе формы возможны
3. b) to invite
3) Choose the correct variant. 
1. b) to read
2. b) to invite
3. c) watching 
4. eating 
4) 4. What clothes does your friend prefer? 
5) -creative 
6) 1. Students usually use computers at the lessons.
2. They will find him in a few days.
7) 1. c) watching 
2. a) fly
3. a) close  
8) 1. a) skeletons
2. a) carved
3. b) scary
4.с) black. 
9) -cross -fingers
-wear -costumes
-break -mirror 
-stand -candle

-hate -number (?)
10) 1. Tony and Jack are answering the questions for the Young Photographers' Competition.
2. Sandy gets up, washes her face, does her morning exercises and goes to school every day.
11) 1. Our foreign language is English +
2. We study Polish at school. (Мы изучаем польский в школе)Тут по школе судить.
3. English is an official language in Russia. -
4.Russian is our mother-tongue. +
12) 1.  Дома и солома съедома
2. Лучше синица в руках, чем журавль в небе.
13) 1. c) took
2. a) phone  
3. c) will write
14) 1.teacher explained the rules to the students.
2. Some children often attend the private school.
15) Довольно вариативные вопросы. Попробуйте сами с:
16) 1. Helen will learn some extra subjects at school next year. 
2. The police phoned Terry's dad.
3. Students usually arrange the party.
17) 1. Nick is the happiest boy that I know.
2. Of the six cars, I like the silver one best.
3. Jane's notebook is cheaper than mine.
18) b) her
2. a) were occupied
3. c) teaches
19) Find and correct the mistakes:
I want to tell about my parents. My Mummy is forty-eight, she is an English teacher at the University. My Dad is fifty, he is a painter. My parents like their work very much. I love my parents and they love me.
20) Put in his, her, ours. mine, yours.
1. Bess usually cleans her boots. Jack cleans his, and I clean mine.
2. This is my house and ... is near the shop. 
3. We have 3 cats at home. These cats are ours.
4. I have given you another pen. This one is not yours.
21) среднее образование - secondary education
высшая школа – high school
хорошее поведение – proper behavior
22) 1. I'm sorry, I can't go for a walk with you. I have to look after my little brother.
2. Listen to the song. What is it about?
3. She always laughs at silly jokes.
4. Parents take care of their children.
5. Mike's father pays for his education.
23) 1. What was bought at the shop?
Where was the TV set bought?
2. Why is football played all over the world?

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