Question

pros

• price to use is low
• is easy to mine
• is easy to use

cons

• supply will run out eventually
• burning adds to global warming
• reclamation of mining areas is expensive to do

which 2 sources of energy does the table describe?
☐ nuclear
☐ coal
☐ solar
☐ petroleum
☑ * geothermal

Explanation:

• Coal: Low cost to use, easy to mine and use. Burning coal contributes to global warming, and mining coal causes land reclamation issues.
• Petroleum: Low cost to use, relatively easy to extract (mine - like in extraction) and use. Burning petroleum adds to global warming, and extraction/use can have environmental issues including land reclamation of extraction areas.
• Nuclear: Doesn't contribute to global warming via burning, mining for nuclear fuel (uranium) is different and it's not as "easy to mine" in the same way, and land reclamation isn't a typical major issue like with coal/petroleum burning.
• Solar: Not easy to mine (it's about harvesting sunlight), and doesn't add to global warming via burning.
• Geothermal: Not easy to mine, and doesn't add to global warming via burning.

Answer:

B. Coal, D. Petroleum