What do scientists mean when they refer to a population? A. all the organisms in an ecosystem
B. Different species that share similar traits
C. all the animals that acquire resources through similar methods
D. two or more of the same species

which group can be described as a population?
A. the life in Earth's atmosphere
B. the living and nonliving factors in a meadow
C. all the plants and animals in a forest
D. all the honeybees in an orchard

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The  pelagic  region is divided into three zones. the top zone is the euphotic or sunlit zone. this is the ocean zone that sunlight penetrates. because this zone gets sunlight, photosynthesis can occur and plants can grow here.sub  zones. the oceanic zone is subdivided into the epipelagic,  mesopelagic, and bathypelagic zones. the epipelagic (euphotic) zone, also called the sunlit zone, receives enough sunlight to support photosynthesis.your question does not include multiple choice,but i can give you some info on what the 3 zones hope this : -)