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Natural environment
Related to any physical feature of the earth's natural environment.
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Natural environment > Coral reefs 
radial canal
Natural environment; Coral reefs
A part of the water vascular system of echinoderms. Specifically, a branch off of the ring canal that leads to an arm (ray) and gives rise to the tube feet. In hydrozoan medusae, ...
holothurin
Natural environment; Coral reefs
A toxic substance released by some holothuroids (sea cucumbers).
bipinnaria larva
Natural environment; Coral reefs
An early starfish larva with ciliated bands running about the periphery.
hemichordate
Natural environment; Coral reefs
Any of various worm-like marine animals belonging to the phylum Hemichordata, having a primitive notochord and gill slits.
ecosystem based management (EBM)
Natural environment; Coral reefs
EBM integrates knowledge of ecological interrelationships to manage impacts within an ecosystem. Effective implementation of EBM should: (1) consider ecological processes that ...
esca
Natural environment; Coral reefs
In some fishes, e.g. Frogfishes, the first dorsal fin ray is modified to function as a fishing pole and lure. The part close to the body is the illicium or fishing pole. The esca ...
sedentary
Natural environment; Coral reefs
Not moving. Many organisms, both plants and animals, spend the majority of their lives in one place.
Sub-categories
- Air (43)
- Atmosphere (59)
- Climate (1147)
- Climate change (10457)
- Coral reefs (23903)
- Deserts (738)
- Earthquake (7143)
- Flood (34)
- Forests (37)
- Grassland (35)
- Land mass (144)
- Landslide (66)
- Mountains (203)
- Plateau (39)
- Speleology (1857)
- Volcano (5852)
- Water (18527)