WEAKNESSES

Question 1

define evenness

Answer 1

how evenly individuals are distributed between species

Question 2

define richness

Answer 2

number of species in a given area

Question 3

define succession

Answer 3

gradual change in species composition over time

Question 4

define primary productivity

Answer 4

rate of biomass production by producers

Question 5

define leaching

Answer 5

loss of nutrients from soil as water drains through

Question 6

define seedbank

Answer 6

A store of dormant, viable seeds in the soil that can grow when conditions are suitable

Question 7

describe one method used to manage genetics in captive breeding programmes

Answer 7

Artificial insemination between individuals from different populations

Question 8

give one advantage of a beating tray method

Answer 8

Good for sampling invertebrates living on shrubs and trees

Quick and simple method

Question 9

Give one advantage of sweep netting

Answer 9

Can sample flying and vegetation-dwelling invertebrates

Covers a large area quickly

Question 10

List 5 invertebrate sampling methods

Answer 10

suction sampler

kick sampling

beating tray

pitfall trap

sweep netting

Question 11

name one factor that might prevent succession from reaching a climax community

Answer 11

grazing
mowing

Question 12

Explain the difference between primary and secondary succession

Answer 12

Primary succession occurs on bare rock or newly formed land with no soil

secondary succession occurs on land that already has soil but has been disturbed

Question 13

Explain how competition between plants changes during succession

Answer 13

Competition is low in early succession because few species are present. As more species establish, competition for light, water, and nutrients increases, and dominant species outcompete others

Question 14

Why does ice float?

Answer 14

Less dense than water

Question 15

How do fur covered animals achieve evaporative cooling?

Answer 15

sweat

Question 16

What is a radiosonde?

Answer 16

a battery-powered, balloon-borne instrument package that transmits vertical atmospheric data to ground stations

Question 17

Water has a high specific heat capacity, what does this mean?

Answer 17

Require high amounts of energy to heat 1KG of substance by 1 degree

Question 18

What is photolysis of water?

Answer 18

splitting of water through light

Question 19

What pollutant can catalytic convertors control?

Answer 19

carbon monoxide

Question 20

What pollutant can electrostatic precipitators control?

Answer 20

PM10

Question 21

What pollutant can urea sprays control?

Answer 21

nitrous oxides

Question 22

What gas can be recovered from coal mines?

Answer 22

methane

Question 23

What pollutant can cleaning electronic equipment with alchohol solvents control?

Answer 23

CFCs

Question 24

Explain power to gas? how does it work

Answer 24

electrolysis to produce gaseous fuels

Question 25

Two advantages of VAWTS? remember - vawt is the unusual one

Answer 25

require less wind velocity to rotate more turbines per area as they are smaller

Question 26

Two environmental factors which could affect the level of noise reaching houses from railway lines

Answer 26

relief as this can absorb/reflect sound temperature inversion increases noise

Question 27

What is pantograph turbulence?

Answer 27

disturbance of air caused by the pantograph on an electric train, which can resuspend and disperse particulate matter along railway lines

Question 28

What statistical test is used to see if there is a correlation?

Answer 28

spearman rank