The growth of the human population has impacted the planet and affected biodiversity. The need for food, space and raw materials has resulted in destruction of habitats and pollution.
What is biodiversity?
A high number of different species in an ecosystem
The number of different species in an ecosystem
A low number of different species in an ecosystem
What is a person’s ecological footprint?
How much land they would require to supply their resources
How much land they would require to remove their waste products
How much land they would require to supply their resources and remove their waste products
Which description of intensive farming is correct?
Farming that involves the cultivation of many different species of plants
Farming that increases the crop yield of an area of land
Farming that has minimal impact on the environment
Weeds compete with crop plants for nutrients, water and light. How do farmers reduce this competition for resources?
A pesticide accumulates in the bodies of organisms in the food chain shown below. In which organism will the highest concentration of the pesticide be found?
Great blue heron
What happens to the toxicity of a pesticide in the bodies of the organisms at higher levels in a food chain?
Stays the same
Which graph shows the general effect of deforestation on biodiversity?
What is the general effect of natural hazards on biodiversity?
Which of the following is a method of conservation of endangered species?
Which of the following is an example of a natural hazard?