EOG Review Week 1 Flashcard

Front

What is an estuary?

Back

An estuary is a coastal area where freshwater from rivers meets and mixes with saltwater from the ocean, creating a unique and productive ecosystem.

Front

Why are estuaries important for biodiversity?

Back

Estuaries support diverse life because they provide a mix of habitats and nutrients, making them ideal for various species.

Front

What is competition in ecology?

Back

Competition is when organisms fight for the same limited resources, such as food, water, or space.

Front

What are bioindicators?

Back

Bioindicators are species or groups of species that provide information about the health of an ecosystem and environmental quality.

Front

What is an index fossil?

Back

An index fossil is a fossil that is used to define and identify a particular time period in the geological time scale.

Front

Why is gold (Au) considered an element?

Back

Gold is considered an element because it cannot be broken down into simpler substances through chemical reactions.

Front

What role do estuaries play in the environment?

Back

Estuaries act as nurseries for many marine species, filter pollutants, and provide habitat for wildlife.

Front

What is the significance of competition in ecosystems?

Back

Competition helps regulate population sizes and can lead to natural selection, influencing evolution.

Front

How do bioindicators help in environmental monitoring?

Back

Bioindicators help scientists assess the health of ecosystems and detect changes in environmental conditions.

Front

What characteristics make trilobites good index fossils?

Back

Trilobites are good index fossils because they were widespread, existed for a relatively short time, and are easily recognizable.