Fall Final Review

Front

What stage of demographic transition is characterized by a drastically declining death rate?

Back

Stage 2

Front

What organism primarily feeds on producers in aquatic ecosystems?

Back

Zooplankton

Front

Under which condition does strong upwelling occur along the coast of Chile?

Back

El Nino

Front

What is the primary producer in aquatic ecosystems?

Back

Phytoplankton

Front

If a family uses 900 kWh of electricity per month and runs two air conditioners using 350 kWh each for three months, what percentage of their total annual electricity is used for air conditioning?

Back

19.4%.

Front

Define 'producer' in an ecological context.

Back

An organism that produces its own food, typically through photosynthesis, such as plants and phytoplankton.

Front

What is the role of zooplankton in the food web?

Back

Zooplankton are primary consumers that feed on phytoplankton.

Front

Explain the significance of El Nino in oceanic and atmospheric conditions.

Back

El Nino is a climate pattern that describes the unusual warming of surface waters in the eastern tropical Pacific Ocean, affecting weather patterns globally.

Front

What is the difference between phytoplankton and zooplankton?

Back

Phytoplankton are microscopic plants that produce energy through photosynthesis, while zooplankton are small animals that feed on phytoplankton.

Front

What is the impact of strong upwelling on marine ecosystems?

Back

Strong upwelling brings nutrient-rich waters to the surface, supporting high productivity and biodiversity in marine ecosystems.