Topic
Plants
Ecosystem
24
Animals
23
Ecology
14
Biological Sciences
13
Climate
13
Climate Change
13
Tundra
13
Carbon Dioxide
12
Vertebrates
12
Carbon
11
Photosynthesis
11
54 Environmental Sciences
10
Arctic Regions
10
Biological
10
Fossils
10
Invertebrates
10
Pollen
10
Soil
10
Environmental Sciences
9
Models
9
Phylogeny
9
Carbon Cycle
8
Climate change
8
Nitrogen
8
Seasons
8
Ecosystems
7
Paleontology
7
Rain
7
Temperature
7
Alaska
6
Algae
6
Biodiversity
6
Biology and Life Sciences
6
Climate Action
6
Earth Sciences
6
Fires
6
Fungi
6
Genetic
6
Mammals
6
Organisms
6
Permafrost
6
Plant Physiological Phenomena
6
Spatio-Temporal Analysis
6
Trees
6
Ecology and Environmental Sciences
5
Evolutionary Biology
5
Geologic Sediments
5
Human activities
5
Humans
5
more ...