Practice Paper 1 (Cambridge International IGCSE Environmental Management)

Figure 6.1 shows water hyacinth plants in a river ecosystem.

Figure 6.1 Adoscam, CC BY-SA 4.0, via Wikimedia Commons

Water hyacinth plants reduce the growth of other aquatic plants by competition.

Suggest two ways water hyacinth plants compete with other aquatic plants.

The scientist investigates the effect of three different fertilisers on the crop yield of maize plants.

Table 3.1 shows the results of the investigation.

Table 3.1

Give one conclusion about the effect of fertilisers on the crop yield of maize.

Justify your conclusion.

The population pyramids for low-income countries (LICs) and high-income countries (HICs) are different.

Complete Table 3.1.

Tick (✓) to show if a description is true or false.

State three strategies for managing human population.

The scientist investigates the effect of three different fertilisers on the crop yield of maize plants.

Table 3.1 shows the results of the investigation.

Complete Table 3.1.

The farmer builds bunds to reduce soil erosion.

Explain how bunds reduce soil erosion.

A scientist investigates soils.

Figure 3.1 shows the composition of a soil.

Figure 3.1

Calculate the percentage of the soil that is pore space.

Iceland is situated on the Mid-Atlantic Ridge plate boundary.

Figure 4.1 shows the plates, the Mid-Atlantic Ridge and the location of Iceland's major volcanoes.

Figure 4.1

State the type of plate boundary that occurs in Iceland.

Energy resources are classified as non-finite or finite.

Circle all the non-finite resources in the list.

biogas

geothermal power

nuclear power using uranium

solar power

wood

Figure 5.1 shows a factory manufacturing cement.

Figure 5.1 Stephen McKay / Rugby Cement Works - CC BY SA 2.0

The manufacture of cement releases carbon dioxide. Carbon dioxide is an atmospheric pollutant.

Use information in Figure 5.1 to suggest one other environmental impact and one economic impact of this factory.

Figure 1.2 shows terms used in the rock cycle and their descriptions.

Figure 1.2

Draw one line from each term to its correct description.

One line has been done for you.

Increased carbon dioxide concentrations in the atmosphere contribute to climate change.

One strategy for managing the impacts of climate change is climate change adaptation.

State what is meant by climate change adaptation.

Bioaccumulation and biomagnification are two impacts of plastic pollution on marine ecosystems.

Describe other impacts of plastic pollution on marine ecosystems.

The oceans are a store of water.

Desalination makes sea water potable.

Define potable water.

Giant African land snails are an invasive species in Florida.

Suggest two other reasons why scientists are concerned about the populations of giant African land snails in Florida.

Figure 2.1 shows a giant African land snail.

Figure 2.1 Charles J. Sharp, CC BY-SA 4.0 via Wikimedia Commons

Giant African land snails eat plants.

In 2022, two populations of giant African land snails were found in the state of Florida, USA.

Figure 2.2 shows the location of these two populations.

Figure 2.2

Use Figure 2.2 to calculate the distance between the two populations.

Show your working.

Figure 3.1 shows the world population pyramid in 2023.

Figure 3.1 PopulationPyramid.net, CC BY 3.0 IGO

Suggest why the percentage values in the pyramid in Figure 3.1 do not total 100%.

Figure 3.2 shows plants surrounded by a layer of mulch.

Figure 3.2 Volker Prasuhn, CC BY-SA 3.0, via Wikimedia Commons

Describe four ways that mulch increases crop yield.

The farmer reports that soil erosion has reduced crop yield.

State three other impacts of soil erosion.

A scientist investigates soils.

Explain why the gas content of a soil is important for plant growth.

Table 4.1 compares two volcanic eruptions, A and B, in 2010.

Table 4.1

Suggest why the number of deaths from eruption A was lower than the number of deaths from eruption B.

Bioethanol is used to generate electricity.

Describe how bioethanol is used to generate electricity.

The African thistle plant, Berkheya coddii, is used for the biological extraction of minerals.

Describe how plants are used for the biological extraction of minerals.

Figure 1.1 represents the rock cycle.

Figure 1.1

Identify the rock, A, B or C, that represents igneous rocks in Figure 1.1.

Table 5.2 shows the global production of carbon dioxide from manufacturing cement from 1980 to 2020.

Table 5.2

Source: Hannah Ritchie, Pablo Rosado and Max Roser (2023), 'CO2 and Greenhouse Gas Emissions', OurWorldInData.org, CC BY 4.0

Use Table 5.2 to plot a line graph on the grid to show the global production of carbon dioxide from manufacturing cement from 1980 to 2020.

Draw a straight line between each plotted point.