Factors such as the increase in human population, new pests and pathogens and armed conflict, can result in food scarcity. Improved farming techniques and sustainable fisheries can help increase supply.
Food security is reduced by which of these?
New pests and pathogens
Monoculture is the growing of what?
Wheat and corn
Only one crop
Several crops together
What is a pathogen?
A disease causing organism
What can the overuse of fertilisers in intensive farming lead to?
Reduced crop yield
Increased numbers of pests
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?
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?
Stay the same
Which of these will decrease as a result of intensive farming?