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Environmental systems and societies paper 1 SL Spanish 2016...
Environmental_systems_and_societies_paper_1__SL_Spanish_2016_November.pdf
Showing 8-9 out of 16
Environmental systems and societies paper 1 SL Sp...
Environmental_systems_and_societies_paper_1__SL_Spanish_2016_November.pdf-Número de convocatoria del alumno N16/4/ENVSO/SP1/SPA/TZ0/XX
Environmental systems and societies...
Environmental_systems_and_societies_paper_1__SL_Spanish_2016_November.pdf-Número de convocatoria del alumno N16/4/ENVSO/SP1/SPA/TZ0/XX
Page 8
– 8 –
4.
Figura 4:
Productividad bruta y neta en distintos niveles tróficos del ecosistema de
Silver Springs, Florida.
Consumidores terciarios (carnívoros)
183
Consumidores secundarios (carnívoros)
1702
Consumidores primarios (herbívoros)
15 240
Productores (plantas)
87 400
30
375
7302
37 100
Radiación solar = 7 140 000
Descomponedores
X
30
192
5600
21 860
50 300
7938
1327
153
Todos los valores en kJ m
–2
a
–1
= Productividad bruta
= Productividad neta
Clave:
[Fuente: adaptado de http://users.rcn.com]
(a)
Indique el proceso que representa la casilla rotulada con una
X
.
[1]
..........................................................................
..........................................................................
(Esta pregunta continúa en la página siguiente)
16EP08
N16/4/ENVSO/SP1/SPA/TZ0/XX
Page 9
– 9 –
Véase al dorso
(Pregunta 4: continuación)
(b)
Defina
productividad primaria neta
.
[1]
..........................................................................
..........................................................................
(c)
Describa cómo actúa la segunda ley de la termodinámica con respecto a la
transferencia de energía dentro del ecosistema de Silver Springs.
[2]
..........................................................................
..........................................................................
..........................................................................
..........................................................................
..........................................................................
..........................................................................
(d)
Distinga entre una pirámide de números y una pirámide de productividad.
[2]
..........................................................................
..........................................................................
..........................................................................
..........................................................................
..........................................................................
..........................................................................
16EP09
N16/4/ENVSO/SP1/SPA/TZ0/XX
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