Ecosystem Changes and Impacts

The video explores changing ecosystems, focusing on spatial and temporal changes. It discusses how fossil records and ecological data help infer past ecosystems and how present-day monitoring aids in conservation. The impact of human activities on ecosystems is examined, along with predictions for future changes. The importance of balancing human lifestyle with ecological sustainability is emphasized.

What are the two types of changes focused on in changing ecosystems?

• Physical and chemical changes

• Biological and geological changes

• Chemical and biological changes

• Spatial and temporal changes

How do fossils in rock strata help scientists?

• By indicating the age of the rock layers

• By showing the current climate conditions

• By predicting future volcanic eruptions

• By identifying the presence of water in the past

What can ice cores reveal about past atmospheric conditions?

• The density of plant species

• The temperature of the ocean

• The concentration of CO2

• The presence of volcanic ash

What is the purpose of creating models from current ecosystem data?

• To increase biodiversity immediately

• To stop all human activities

• To eliminate all invasive species

• To predict future ecosystem changes

Which island is used as an example of primary succession?

• Kangaroo Island

• Surtsey Island

• Mount St. Helens

• Galapagos Islands

What is a consequence of land clearing?

• Habitat fragmentation

• Decreased CO2 levels

• Improved soil quality

• Increased biodiversity

How does rising CO2 levels affect ecosystems?

• By reducing atmospheric heat retention

• By decreasing plant growth

• By causing sea levels to drop

• By altering producer productivity

What is a potential impact of introducing new species to an ecosystem?

• Decreased competition for resources

• Unbalanced food webs

• Increased native species population

• Stabilized food webs

What is a result of genetic modification in agriculture?

• Decreased use of fertilizers

• Unsustainable land use

• Balanced nutrient cycles

• Increased genetic diversity

Why is it important to consider various factors in future ecosystem modeling?

• To ensure accurate predictions

• To simplify the ecosystem

• To increase the number of species

• To eliminate all human impact