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_____ are a transition area between a river and the ocean.

Columbus’ first voyage to the new world took place in the year

The set of traits that affect an organism’s schedule of reproduction and survival.

Evolutionary adaptations that enable organisms to meet the challenges posed by their abiotic environments.

Hernando de Soto primarily explored what region of what is now the USA?

limiting factors whose intensity is related to population density and can limit growth in natural populations.

Aquatic area where light is available for photosynthesis. This zone includes the shallow water near shore and the upper layer of water away from shore.

The global water cycle can transport pollutants from terrestrial to aquatic ecosystems hundreds of miles away is an example of ____.

Nearly all alcohol ingested is metabolized in the ____.​

The scientific study of the interactions between organisms and their environments.