can someone please answer these questions- thank you so much!! Answer them understandly, and very easily. 10 points to the person who answers most easily,but has written knowledgably! Please answer within the next hour!
1.once a recource is extracted, what is the rock that will not be used and will be pumped back into shafts,as part of reclaming that area?
2.If mines are not restored properly describe two possible problems?
3. BLANK is when topsoil is returned and parks or wildlife reserves are one of the many new uses of the land.
4. what two factors determine how long qa mineral reserve is going to last?
5. what are two disadvantes of burning coal?
2006-09-10 16:07:39 · 7 answers · asked by driven 2 in Education & Reference ➔ Homework Help
1) Its not always rock that they use. Sometimes they use broken up concrete, and refuse like house hold trash.
2) The land above become very unstable. Thus creating sink holes. And if they are not restored properly they can have a build up of gasses that can leak out and can be ignited by friction. This will create an explosion.
3)Revitalization is when top soil is returned and parks or wild life are one of the many new uses of the land.
4) It depends on the size of the mineral deposit, and the cost to extract it from the ground.
5) a) It causes acid rain
b) It is bad for air quality. It will also leave coal dust when it is being transfered which in due time will cause anyone with lung disorders to die. Due to the fact it coats the lung walls with the dust.
2006-09-10 16:17:52 · answer #1 · answered by John M 3 · 0⤊ 0⤋
5.Disadvantages
Some sources of coal are deep below the ground, as in the UK. They can be difficult, costly and dangerous to mine.
Burning coal without first purifying it contributes to global warming, as well as to the production of smog (smoke and fog), which is harmful to health. It is a finite resource and will eventually run out.
2006-09-10 23:19:36 · answer #2 · answered by UgottaBkiddinMe 5 · 0⤊ 0⤋
I don't know!! Now where's my ten points? =P
ps- why would you think that an unattainable unuseable (basically imaginary) 10 pts would motivate someone else to spend their time on something that is probably required of YOU to find out???? Whoever answers this Q really deserives their ten points because they have nothing else to do and the points probably really matter to them.
2006-09-10 23:12:57 · answer #3 · answered by Angie B 3 · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Coal_mining I think that should contain all you need probably. If not GOOGLE it or search on Yahoo
2006-09-10 23:16:10 · answer #4 · answered by Joe 2 · 0⤊ 0⤋
you can find all that on the net now go do your own homework.
2006-09-10 23:14:26 · answer #5 · answered by native 6 · 0⤊ 0⤋
Are you trying to get us to do your homework or something?? ;-)
2006-09-10 23:13:24 · answer #6 · answered by Mandie 2 · 0⤊ 0⤋
LOL, it's your homework so do it yourself
2006-09-10 23:20:21 · answer #7 · answered by patti duke 7 · 0⤊ 0⤋