Which of the following is(are) drawbacks to the use of methane hydrate as a fuel?
a. When melted, it produces methane, a greenhouse gas.
b. It is difficult to mine as a solid located at the bottom of the oceans.
c. It is mixed with water.
d. All of these are drawbacks associated with methane hydrate.
Question 2
Ethyne, HCCH, is also named ______________.
Fill in the blank(s) with correct word