PMA 2 Review Flashcard

Front

What is deforestation and its impact on the environment?

Back

Deforestation is the clearing of forests, which leads to the release of CO2 and a decrease in oxygen levels, disrupting ecological cycles.

Front

What type of ecological succession occurs after a volcanic eruption?

Back

Primary succession occurs after a volcanic eruption, where life begins to develop on newly formed land.

Front

What distinguishes eukaryotic cells from prokaryotic cells?

Back

Eukaryotic cells have membrane-bound organelles, while prokaryotic cells do not.

Front

What is surface runoff and its role in ecosystems?

Back

Surface runoff is the process where water flows over land, washing fertilizers and pollutants into rivers and oceans.

Front

Define abiotic factors in an ecosystem.

Back

Abiotic factors are non-living chemical and physical components of the environment, such as temperature, water, and minerals.

Front

What is the role of CO2 in the atmosphere?

Back

CO2 is a greenhouse gas that traps heat in the atmosphere, contributing to climate change.

Front

Explain the concept of ecological balance.

Back

Ecological balance refers to the equilibrium between living organisms and their environment, ensuring sustainability.

Front

What is the significance of the ozone layer?

Back

The ozone layer protects Earth from harmful ultraviolet (UV) radiation from the sun.

Front

What are the main components of a food web?

Back

A food web consists of producers, consumers, and decomposers, illustrating energy flow in an ecosystem.

Front

Define primary productivity in an ecosystem.

Back

Primary productivity is the rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances.