L30 Global Climates and Biomes Flashcards

1
Q

what is the driving force of energy flow in an ecosystem?

A

the sun

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2
Q

what are producers?

A

they capture and utilise sun’s energy to build biomes

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3
Q

name the 3 types of consumers

A

omnivores, carnivores and herbivores

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4
Q

what is ecology?

A

the study of interactions between organisms and their environment

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5
Q

what is sustainability?

A

the act of meeting the needs of the present without compromising the ability of future generations to meet their own needs

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6
Q

how many UN sustainability goals are there ?

A

17

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7
Q

what is the circle of reliance?

A

environment supports society, society supports economy and the economy supports everyone

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8
Q

what sustainability goals are relevant to the biosphere?

A

1) Life below water
2) Life on land
3) Climate Action
4) Clean water and sanitation

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9
Q

how do minerals build up in soil?

A

eathering of bedrock

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10
Q

what does biome mean?

A

a characteristic assemblage of plants and animals that develops upon a defined climatic template that is typical of broad geographic regions

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11
Q

What biomes can you find along the equator?

A

tropical forest, savanna, temperate grassland

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12
Q

what biomes can you find 30 degrees south of equator?

A

savanna, temperate grassland, desert

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13
Q

what biomes can you find over 40 degrees north of equator?

A

temperate deciduous forest, coniferous forest, tundra

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14
Q

what is the relationship between climate and animals?

A

climate dictates vegetation

vegetation dictates animal population

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15
Q

what biome shows greatest range in temperature and precipitation?

A

temperate forest

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16
Q

what biome lowest range in temperature and precipitation?

A

temp - tundra

precipitation - desert

17
Q

why does solar energy vary with latitude of earth?

A

spherical shape of earth results in an uneven distribution with respect to latitude

18
Q

why do day lengths vary according to the position of earth?

A

sun is at an angle

19
Q

why do temperature and precipitation vary according to global position?

A

pattern of movement of air masses

20
Q

why do we get high rainfall near the equator?

A

due to high heat, water rises and evaporates, when high in air it cools and condenses forming rain

21
Q

where does most precipitation occur?

A

at equator, 0 degrees

22
Q

where in relation to the equator is most dry due to the evaporation of water in air?

A

30 - 23.5 degrees N and S of equator

23
Q

what happens in low pressure areas?

A

air rises and releases moisture as precipitation

24
Q

what happens in high pressure areas?

A

descending air absorbs moisture creating arid conditions

25
where do you expect high pressure?
30 - 23.5 degrees N and S of equator
26
where do you expect low pressure?
nearest the equator, 0 degrees
27
what abiotic factor influences biome temperatures?
the ocean currents transport heat and cold | example gulf of mexico heats Ireland up
28
what would happen if the gulf of mexico's current switched?
Ireland would be 20 degrees colder
29
what would happen if the gulf of mexico's current switched?
Ireland would be 20 degrees colder
30
what is biome productivity?
the rate at which biomass is produced per unit area by plants
31
what is primary productivity?
rate at which biomass is produced per unit area by plants
32
what is net primary productivity?
the biomass left after some primary productivity has been respired away by the plants themselves
33
what represents the actual rate of production of new biomass?
net primary productivity
34
what happens biomes the further they venture from the centre of earth?
less nutrients, low productivity
35
what 3 strategies have plants evolved?
competitors, stress-tolerators and ruderals
36
what plant type makes up majority of biomass in Desert?
Therophytes (annuals), fast life cycle
37
what plant type makes up majority of tropical rainforest?
phanerophytes
38
what plant type makes up the majority of tundra?
hemicryptophytes