AICE marine science AS Level Exam review paper 1, 2 Questions And Answers
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Module
AICE Marine Science
Institution
AICE Marine Science
scientific method - ANS 1. for valid experiments, data should be collected numerous times (the more times, the more accurate)
2. only one variable (independent) should be changed in an experiment. All others should be controlled. The deponent variable is dependent upon what you changed-it wi...
AICE
marine
science
AS
Level
Exam
review
paper
1,
2 scientific
method
-
ANS
1.
for
valid
experiments,
data
should
be
collected
numerous
times
(the
more
times,
the
more
accurate)
2.
only
one
variable
(independent)
should
be
changed
in
an
experiment.
All
others
should
be
controlled.
The
deponent
variable
is
dependent
upon
what
you
changed-it
will
be
what
you
are
measuring
in
n
experiment
3.
quantitative
results-
numbers
(qualitative=descriptive
words)
outlining/designing
an
experiment
-
ANS
-state
amount
of
containers
e.g.
5
tanks
of
each
-state
constants
(at
minimum
3)
(light,
salinity,
amount
of
water,
how
often
results
are
calculated,
amount
f
exposure/days
etc.)
-what
is
the
amount
of
independent
variables
used?
pick
a
quantity
suitable
for
the
experiment
appropriate
to
the
experiment
-state
the
duration
of
the
entire
experiment
-state
the
calculating
results.
most
common
is
simple
counting
-state
repeat
experimentation
and
calculate
mean/average
from
all
trials
describing
results
of
an
experiment
-
ANS
-state
the
most
with
reference
to
data
-state
the
least
with
reference
to
data
-manipulate
data
by
finding
range
creating
or
working
with
graphs
-
ANS
-use
the
entire
graph
-correctly
label
the
x
and
y
axis
-use
correct
intervals.
do
not
use
breaks
to
begin
at
certain
number.
each
interval
is
equally
spaced.
use
appropriate
scale
the
divide
the
total
number
of
spaces
on
the
graph
by
the
range.
this
will
give
you
your
interval.
-when
constructing
a
graph,
make
sure
your
scale
is
appropriate
to
show
a
relationship-you
may
need
to
have
values
on
the
axis
to
the
left
and
to
the
right
-plot
all
points
correctly
-line
of
best
fit
explain
what
would
be
needed
to
turn
an
experiment
into
a
theory
-
ANS
-rigorous
testing
-repeated
testing
by
many/other
scientist
-scientist
get
similar
results
but
with
the
same
conclusions
no
exception symbiosis
-
ANS
remember
that
aice
looks
at
symbiosis
and
mutualism
one
in
the
same.
it
is
a
close
relationship
between
2
different
species
where
both
benefit.
make
sure
you
explain
what
both
are
getting/giving.
examples:
coral
and
zooxanthellae;
tube
worms
and
chemo.
bacteria
arrows
in
a
food
chain
-
ANS
or
food
web
represent:
transfer
engery
and
biomass
-do
not
use
the
words
"eats,"
instead,
use
consumes
predator/prey
relationships
-
ANS
remember
that
the
number
of
predators
lags
behind
the
number
of
prey
organisms
succession
-
ANS
tube
worms,
remember
=,
tevnia
first,
the
they
are
replaced
by
riftia
extreme
and
unstable
-
ANS
explain
why
extreme
and
unstable
environments
have
low
biodiversity
first,
define
terms:
extreme,
unstable,
and
biodiversity
second,
give
examples
of
each
environment
with
organism's
adaptation
to
that
environment
extreme
environments
-
ANS
have
a
low
ph,
high
temperature,
low
oxygen
and
high
salinity
-extreme
environments
have
limited
resources
-hydrothermal
vents
are
an
extreme
environment
-example
of
an
organism
at
a
hydrothermal
vent
is
chemosynthetic
bacteria
unstable
environments
-
ANS
-sandy
environments
where
there
is
sand
slippage;
organisms
are
easily
washed
away
-organsims
burrow
to
avoid
being
washed/swept
away.
they
are
also
exposed
to
air,
so
desiccation
can
occur.
organisms
must
adapt.
high
biodiversity
-
ANS
areas
of
high
biodiversity
have
a
narrow
niches
because
if
niches
overlap,
individuals
will
die
out.
narrow
niches=reduces
overlap=reduces
competition
niche
-
ANS
an
organisms
role
in
its
environment
-generalized-
an
organisms
having
a
wide
range
of
food
and
habitat
-specialized-
an
organism
that
has
a
narrow
food
requirement
and
lives
in
a
specific
habitat
photosynthesis
-
ANS
is
the
process
by
which
sunlight
energy
is
used
to
synthesize/make/convert
to
glucose
by
producer
chemosynthesis
-
ANS
is
the
process
by
which
chemical
energy
is
used
to
synthesize/make/convert
to
glucose
by
bacteria
ecological
pyramids
-
ANS
do
not
draw
a
traditional,
sloping
pyramid.
use
stepped
pyramids
only.
use
a
scale
to
show
appropriate
proportions.
make
sure
you
label
each
step
of
the
pyramid
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