Ecology 2

Question 1

What are the biological factors
affecting levels of food security?

Answer 1

• the increasing birth rate has threatened food security in some countries
• changing diets in developed countries means scarce food resources are transported around the world
• new pests and pathogens that affect farming
• environmental changes that affect food production, such as widespread famine occurring in some countries if rains fail
• the cost of agricultural inputs
• conflicts that have arisen in some parts of the world which affect the availability of water or food.

Question 2

Sustainable methods must be found to…

Answer 2

…feed all people on Earth.

Question 3

What is food security?

Answer 3

Food security is having enough food to feed a population.