How is coal extracted from mountaintop removal mines?
a.
Dynamite is used to create undergrou...
![subject](/tpl/images/cats/biologiya.png)
How is coal extracted from mountaintop removal mines?
a.
Dynamite is used to create underground tunnels where miners go to extract the coal.
b.
Dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal.
c.
Coal in mountaintops is extracted by digging strips in the landscape to reach the coal.
d.
Placer deposits in mountain river bottoms are removed by sifting through sediment.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 05:30
Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air
Answers: 2
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 16:00
Which of the following is a true statements about viruses? viruses have no nucleus. viruses are alive. viruses have a cell membrane. all viruses are deadly.
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 19:30
Do you think humans have a moral obligation to preserve the habitat of the chimpanzee
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 20:00
The evidence that egaeus has maimed berenice includes all of these except
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/biologiya.png)
Biology, 18.03.2021 01:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.03.2021 01:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.03.2021 01:40
![question](/tpl/images/cats/biologiya.png)
Biology, 18.03.2021 01:40
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 18.03.2021 01:40
![question](/tpl/images/cats/istoriya.png)
History, 18.03.2021 01:40
![question](/tpl/images/cats/biologiya.png)
Biology, 18.03.2021 01:40
![question](/tpl/images/cats/istoriya.png)
History, 18.03.2021 01:40
![question](/tpl/images/cats/mat.png)
Mathematics, 18.03.2021 01:40
![question](/tpl/images/cats/en.png)
English, 18.03.2021 01:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/User.png)
SAT, 18.03.2021 01:40
![question](/tpl/images/cats/mat.png)
Mathematics, 18.03.2021 01:40