AEcotone
BEcotype
CEcocline
DEcological Niche
Answer:
A. Ecotone
Read Explanation:
Ecotone ๐๏ธ: A transition zone or boundary area between two adjacent, distinct ecosystems (like a forest and a grassland, or a river and a bank). This zone often has a greater species diversity and population density than either adjoining community, a phenomenon known as the edge effect.
Ecotype: A genetically distinct geographic variety, population, or race within a species that is adapted to specific environmental conditions. It's a variation within a species, not a zone between ecosystems.
Ecocline: A gradual and continuous change in an ecosystem or community structure correlated with a gradual change in a physical environmental factor, such as a continuous transition from a coastal area to a deep-sea area. It is a gradient, not a fixed zone.
Ecological Niche: The role and position a species has in its environment, including all its interactions with the biotic and abiotic factors of that environment (e.g., what it eats, where it lives, when it reproduces).