Answer:
Blank 1 : Methane
Blank 2: Carbon dioxide
Explanation:
A rotting biomass would emit a huge proportion of methane. Microbes work on waste products and releases methane and other gases. Methane is the primary biogas obtained from a decaying biomass. Methane can be used as a source of fuel for both industrial and domestic purposes.
Burning of biomass would produce carbon dioxide to a large extent. Methane produced would fuel the burning process so as to release significant amount of carbon dioxide.
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The correct answer is : Planetary accretion
In Planetary accretion theory, the universe was formed by accretion process, which is the accumulation of particles into a massive object by attracting more matter, forming all kind of astronomical objects such as stars and planets
D. The number of small farms<span> has decreased, and they are outnumbered by </span>large farms<span>.</span>
Not sure if you still need it but the answer is (c) new cities were built along the shores of the Great Lakes.