Subject
Conifers
1
Evergreens
1
Force and energy.
1
Forest ecology
1
Glacial epoch
1
Paleobiogeography
1
Paleoecology
1
Paleontology
1
Physics.
1
animal development
1
climatic change
1
climatic effect
1
climatic impact
1
climatology
1
fossil
1
ice
1
plant development
1
plant growth
1
pollen
1
radiocarbon dating
1
sea level
1