biosphere (c)

BIOSPHERE (C)

SQA Questions

What you should know

1. Pollution affects the e_________ of ___, f________, s__ and l____.

2. The main sources of pollution are d________, a__________ and i________.

3. Domestic – s______ and r______ e.g. p______

4. Agricultural – f________ and p_________

5. Industrial – s_____ and g______ from f_________ and p_____ stations

cosystems air

reshwater ea and

omestic griculturalndustrial

ewage ubbishlastic

ertilisersesticides

moke ases actories ower

6. When fossil fuels are b______ in power stations to produce e____ the gas s______ d_______ is released which leads to a____ r_____

7. Nuclear w_____ from nuclear power stations can enter f____ c_____ cause c_______ and has to s______ for h_______ of years

8. Pollution can be controlled by r_______ the burning of f______ f_____ and using alternative e______ sources e.g. _____ and r_______ h_______ gases from factory chimneys before r______ into the air (S__________)

urned nergy

ulphur ioxide cid ain

aste ood hains

ancer tored undreds

educing ossil uels

nergy wind

emoving armful elease

CRUBBING

9. O______ waste e.g. s_______ is a f_____ s_____ for m___________

10. If organic waste i_______ then it leads to an i______ in m_____________ which rapidly use up the o______ in the water leading to l____ oxygen in the water for o_____ organisms

11. This lack of o______ will k___ animals and r______ the number of s_______ in the water

12.Organisms that can give i__________ on p_______ are called i_________ species

ewage ood

rganic ource icro organisms

ncreases ncrease icro organisms

xygen ess

ther

xygen ill

educe pecies

nformation ollution ndicator

13.O____ fishing and d_________ of the rainforest are examples of bad management of ecosystems.

14.To prevent overfishing f____ q_____ should be used and the rain forest can be saved if we make f____land m____

p__________15. Modern agriculture involves large areas

of land being used to grow o___ type of crop and leads to o______ of p_______ which k___ wildlife and causes water p_______

ver estruction

ish uotas

arm oreroductive

ne

veruse esticides ills

ollution

16.Farmers use f________, i__________, f_________ and h_________ chemicals to make their land more productive

17.Tropical rain forests are b______ to allow crops to be grown which leads to soil e_______ and loss of soil f_______ and m_____ CO2 released into the a___

ertilisers nsecticide

ungicide erbicide

urned

rosion ertility

ore ir

agricultural

Sea water

Rubbish, litter

X

Use alternative fuels/remove acid gases from smoke / scrubbing / filters on chimneys

Y Treat sewage before discharge

Z Use catalytic converters / unleaded petrol / reduce traffic / use public transport

Litter, sewage

Fertilisers / pesticides

industrial

X

Kills wildlife / over use of pesticides and weedkillers / trees and hedges removed

Y Soil erosion / loss of important plant species / loss of soil fertility / burning releases CO2

Z Large number of bacteria use up oxygen /animals die / algal blooms occur

cockle hydrobia ragworm

curlew

Ringed plover

Decrese in godwits / curlews / plovers / wading birds

Or Decrese in hydrobia / ragworm

Pollution indicator species

Oxygen decreases then increases

sewage decreasing / food supply decreasing

7

Lowest oxygen concentration

Pollution indicator species

8

12693

30

Increasing numbers of bacteria

(Pollution) indicator species

use up lots of oxygen / increased respiration