psysical n enviro variable (climate)

Question 1

what are the key environmental variables that determine farming patterns?

Answer 1

soils and climate

Question 2

most crops require what to grow well?

Answer 2

climatic conditions

Question 3

what are the examples of crops that are grown commercially?

Answer 3

rice and potatoes

Question 4

what does rice require to grow?

Answer 4

high rainfall

Question 5

why does rice need high rainfall?

Answer 5

needs a period of time standing in water

Question 6

what temperature does rice grow best in?

Answer 6

between 16 and 27c

Question 7

what type of soils does rice grow best in?

Answer 7

alluvial soils

Question 8

what are alluvial soils?

Answer 8

fertile soils deposited when a river floods

Question 9

why are clay soils good for rice?

Answer 9

retain water

Question 10

how is potato blight caused?

Answer 10

too much rainfall, disease that destroys potato

Question 11

what temperatures do potatoes grow best in?

Answer 11

18-20c

Question 12

what kind of soils do potatoes prefer?

Answer 12

loos and sandy soils

Question 13

what type of agriculture takes place in polar regions?

Answer 13

nomadic cultivation

Question 14

what is nomadic cultivation?

Answer 14

when a farmer moves form one place to another to find better supplies such as water

Question 15

what is sedentary farming?

Answer 15

when a farmer stays in the same place

Question 16

what prevents sedentary farming in polar regions?

Answer 16

permafrost

Question 17

what are the two climatic types?

Answer 17

semi arid and mediterranean

Question 18

where are semi arid climates found?

Answer 18

near the equator

Question 19

what are examples of areas with a semi arid climate?

Answer 19

savannah grassland, sahel (below the sahara)

Question 20

why are species adapted in stem arid climates?

Answer 20

they experience wild fires

Question 21

where are mediterranean climates found?

Answer 21

warm coastal areas 30-40 degrees in latitude

Question 22

what does of vegetation is found here?

Answer 22

shrubs, bushes, small trees

Question 23

how much rain do Mediterranean climates receive a year

Answer 23

50 cm

Question 24

how much rain do semi arid climates receive?

Answer 24

25-50 cm a year

Question 25

what is the difference in seasons between the two climates/

Answer 25

Mediterranean experiences distinct summer and winter seasons whereas semi arid does not

Question 26

what kind of threat are areas with a Mediterranean facing?

Answer 26

development as they are desired areas