Food security is reduced by which of these?
Intensive farming
New pests and pathogens
Carbon dioxide
Monoculture is the growing of what?
Wheat and corn
Only one crop
Several crops together
What is a pathogen?
A disease causing organism
A bacterium
A fungus
What can the overuse of fertilisers in intensive farming lead to?
Reduced crop yield
Increased numbers of pests
Eutrophication
Why do farmers keep cattle in small pens?
To reduce energy wasted in movement and increase yield
To increase movement and decrease yield
To increase temperature and reduce yield
How have some countries tried to preserve fish stocks?
Quotations
Quotes
Quotas
What types of fishing nets have been introduced to protect fish?
Those with smaller gaps
Those with larger gaps
Those with no gaps
What are the consequences of global warming?
Increased polar ice caps and increased sea levels
Melting of the polar ice caps and increased sea levels
Melting of the polar ice caps and decreased sea levels
An increase in the greenhouse gas methane will do what to the temperature of the earth?
Decrease
Stay the same
Increase
Which of these will decrease as a result of intensive farming?
Biodiversity
Temperature
Monoculture