Physics & Astronomy
exobiology
100%
ecology
88%
ecosystems
86%
biochemistry
82%
stoichiometry
59%
nutrients
41%
cycles
20%
chemical elements
20%
recycling
17%
food
17%
biology
16%
explosions
14%
interactions
12%
carbon
10%
energy
9%
Agriculture & Biology
stoichiometry
69%
biochemistry
58%
elemental composition
57%
ecosystems
47%
ecology
46%
biological development
23%
aquatic food webs
22%
chemical elements
22%
energy flow
21%
balance studies
20%
evolutionary biology
18%
explosions
18%
biogeochemical cycles
17%
energy balance
16%
recycling
14%
carbon
10%
nutrients
9%
organisms
8%
Earth & Environmental Sciences
biochemistry
72%
stoichiometry
68%
ecology
48%
ecosystem
36%
conceptual framework
33%
evolutionary biology
20%
chemical element
18%
energy flow
17%
nutrient cycling
17%
explosion
14%
food web
14%
biota
14%
recycling
12%
nutrient
10%
carbon
8%
need
8%
energy
7%
analysis
4%