elements in the physical environment

Question 1

what are the 4 elements

Answer 1

• climate
• soils
• water supply
• geology

Question 2

which element is the most important

Answer 2

climate

Question 3

what determines food productivity

Answer 3

rainfall temperature, wind velocity and solar insolation and type of farming

Question 4

what temperature do crops need to grow

Answer 4

5 degrees

Question 5

what do the characteristics of climate drive

Answer 5

nature of disease e.g malaria, ebola

Question 6

what is the most important feature of soils

Answer 6

fertility

Question 7

what do soils depend on

Answer 7

structure, texture, acidity, organic matter and nutrients

Question 8

how can fertility be maintained

Answer 8

with artificial chemical fertilisers in areas with a high population density

Question 9

why is water supply important

Answer 9

for hydration and irrigation to maintain food production and hygiene and sanitation

Question 10

what does water supply determine

Answer 10

population distrubtion, for example in Eygpt 95% of its 80 million live within 12 miles of the Nile