The correct answer is organic.
So the complete sentence would be:
"BIOMASS is renewable organic material that comes from plants and animals; this ranges from wood and leftover crops to garbage."
BIOMASS is renewable ____ material that comes from plants and animals; this ranges from wood and left over crops to garbage.
manufactured
refined
organic
chemical
BIOMASS is renewable ____ material that comes from plants and animals; this ranges from wood and left over crops to garbage.
manufactured
refined
organic
chemical
1 answer