ESS exam questions & answers 2024/2025
Outline
two
negative environmental impacts of aquaculture 2b - ANSWERSLoss/degradation of natural habitats;
disease spread through farm
Describe
two
strategies for the management of sustainable capture fisheries 2c - ANSWERSregulation of quotas/...
negative environmental impacts of aquaculture 2b - ANSWERSLoss/degradation of natural habitats;
disease spread through farm
Describe
two
strategies for the management of sustainable capture fisheries 2c - ANSWERSregulation of
quotas/minimum size of fish caught. restriction to fishing seasons
/ to let stocks recover.
Outline the factors that contribute to total biodiversity of an ecosystem 6a - ANSWERSbiodiversity
includes the diversity of species, habitat and gene. species diversity involves both the variety/number of
species/richness and their
relative proportions/evenness;
habitat diversity refers to the range of different habitats in an ecosystem or
biome
Outline how energy drives the hydrological cycle 7a - ANSWERSprimary source of energy driving
hydrological cycle is solar energy;
solar energy causes changes of state in water.
Outline
two
reasons why the species within pioneer communities in
Figure 1
, are more
likely to be
r
-strategists than
K
-strategists 1a - ANSWERSr- strategists produce greater numbers/many offspring/fast population
growth;
r- strategists distribute themselves more widely/colonize more quickly;
r- strategists mature quickly/reproduce earlier/establish themselves fast
r- strategists better adapted to harsh/low
-nutrient conditions/less specialised niche
Outline
two
reasons why the climax community in
Figure 1
is more stable than the
intermediate community. 1b - ANSWERSgreater number
of species/habitat/ecological niches/genetic diversity
more complex/diverse energy pathways/food webs
Distinguish between zonation and succession 1c - ANSWERSsuccession is the process of changes in
community/ecosystem over time,
whereas zonation is the process of changes over an environmental
gradient
/space
Outline
two
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