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M1. &n=
bsp;
(a) 1 mark for each adaptation and 1 =
mark
for its correct linked advantage
long
/ thick hair / fur (1)
for insulation (1)
allow keeps warm
small ears (1=
)
for reduced heat loss (1)
small feet (1=
)
for reduced heat loss (1)
ignore wide feet
ignore prevent sinking
white
fur / coat (1)
for camouflage / poor emitter (1)
small
SA/V ratio (1)
reduces heat loss (1)
thick
layer of fat (1)
insulates / keeps warm (1)
max 4
(b) 1 mark for each adapt=
ation
and 1 mark for its correct linked advantage
horns
(1)
for defence (1)
long
legs (1)
for speed / escape / vision (1)
light
colour (1)
for camouflage (1)
allow pattern
eyes
on side of head (1)
for wider field of vision (1)
hooves
(1)
for speed / escape (1)
large
ears (1)
to hear predators better (1)
max 4
[8]
M2. &n=
bsp;
(a) leaves less likely t=
o be
eaten / mown
1
(b) plant
less likely to be pulled out by grazers
1
(c) better=
span>
competitor for light / grows higher than other plants to gain light
1
(d) better=
span>
competitor for water / collect water from a larger area
1
[4]
M3. &n=
bsp;
(a) sulfur=
dioxide
1
(b)  =
;
degelia
extra boxes ticked cancels the=
mark
1
(c) (i)
towards the east
extra boxes ticked cancels the=
mark
1
(ii)  =
; &n=
bsp;
tick in bottom row
extra boxes ticked cancels the=
mark
1
[4]
M4. &n=
bsp;
(a) streamlined / aerody=
namic
/ swept-back / arrow-shaped / dart-shaped
wings / tail
allow pointed / curved wings
ignore pointed tail / beak
O=
R
<=
span
class=3DGramE>large / long wings
ignore large tail
1
(b) no /
fewer insects / food (in winter)
allow too cold
ignore not adapted to cold
ignore day length
1
(c) (i)
any two from
feed
/ hunt at different heights or swifts feed higher up
feed
/ hunt at different times or swifts feed at night
arrive
/ depart at different times
2
(ii) nesting=
sites / territory / habitat
allow homes / space
ignore food unqualified
allow well qualified food answers
eg insects / food near the ground
or
insects / food when it€™s ligh=
t
or
insects / food between early M=
ay and
early August
1
[5]
M5. &=
nbsp;
(a) (i)  =
;
any two from:
list principle
light
ignore oxygen / food / sun
water
space
nutrients
/ ions / minerals / named
carbon
dioxide / CO2
2
(ii) less
competition for water
ignore space / light / food
or
more water / nutrients / minerals available
1
(b) camoufla=
ge
/ same shape as leaf / looks like a leaf
allow €˜blends in€™
ignore colour
1
[4]

M6. &n=
bsp;
(a) any two from:=
control variables from informa=
tion
given
area
of bed sampled
sampling
time
size
of net
kicking
action
net
position
2
(b) any two
from:
must be ideas related to a<=
/u>
sample
some
animals not dislodged
ignore reliability etc
some
animals missed / through / escaped net
invertebrates
difficult to identify
invertebrates
from outside area
2
(c) 10 to 99 or 10 €“ 99 or 99 to 10 or 99 €“ 10
1
(d) any two
from:
increased
/ goes up
allow increase implied from al=
l data
described
0 at sample 4=
to
(more than) 100
2
(e) mayfly=
span>
1
<=
span
class=3DGramE>because not found downstream of point where sewage ent=
ers
stream
or only in the unpolluted water
1
[9]
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