Humams Impact

Question 0

Eutrophication process

Answer 0

Nutrients load up from fertilisers
Everything grows.
Algae blooms stops sunlight reaching the plants on the bed of the pond.
Decomposers eat plants using up even more oxygen
Ecosystems die as oxygen levels are too low to support life.

Question 1

Eutrophication definition

Answer 1

Process by which a body of water becomes rich in nutrients. This encourages the growth of oxygen depleting bacteria resulting in harm to other organisms.

Question 2

How to make food production effective.

Answer 2

Cereal crops, not animals as more biomass is lost. Less tropic levels.
Intensive farming (restrict movement, control temperature, control feeding, antibiotics)

Question 3

Decay

Answer 3

Detrivores, small invertebrates, eat big stuff then poo it out for the….
Decomposers, microscopic organisms which feed saprotrophically (eat externally). Some minerals remain in the soil.

Question 4

Carbon cycle

Answer 4

Air
Plants
Decomposers
Fossil fuels
Animals
Carbon in sedimentary rock

Question 5

Deforestation results in…

Answer 5

CO2 into atmosphere by
Burning
Machinery
Photosynthesis doesn't happen
Reduce biodiversity

Question 6

Why do we deforest

Answer 6

Crops can be planted

Cattle space

Question 7

Peat bogs and solution

Answer 7

Peat removed from bigs and used in garden compost
Compost decayed by microorganisms
They real ease CO2
Solution = use peat free compost

Question 8

Sequester

Answer 8

The storage of CO2 directly or indirectly in plant material and water