Earth & Environmental Sciences
vegetable waste
91%
microbial ecology
76%
vegetable
62%
fruit
61%
anaerobic digestion
60%
digestion
59%
methane
46%
removal
21%
meat
21%
biogas
19%
market
14%
food
13%
organic matter
13%
demand
13%
bacterium
12%
nitrogen
12%
city
11%
chemical
10%
distribution
7%
effect
4%
Engineering & Materials Science
Anaerobic digestion
80%
Vegetables
78%
Ecology
75%
Fruits
70%
Methane
57%
Meats
27%
Biological materials
26%
Biogas
23%
Bacteria
22%
Nitrogen
18%
Medicine & Life Sciences
Ecology
73%
Methane
63%
Vegetables
60%
Fruit
58%
Digestion
56%
Biofuels
21%
Archaea
18%
Meat
16%
Mexico
16%
Feasibility Studies
15%
Nitrogen
15%
Food
10%
Bacteria
10%
Population
6%
Chemical Compounds
Microbial Ecology
100%
Methane
48%
Organic Matter
21%
Reaction Yield
16%
Food
14%
pH Value
8%