2. Impact on population growth & natural hazard's on biodiversity

Question 1

Quadrats

Answer 1

used to sample plants and slow moving animals

Question 2

Pitfall trap

Answer 2

used to sample insects living in soil of leaf litter

Question 3

Abiotic factor

Answer 3

non living factor which affect ecosystems

Question 4

Abiotic factors can be measured using…

Answer 4

light/pH/moisture meter/thermometer

Question 5

Biodiversity

Answer 5

range of different species in a ecosystem

Question 6

low biodiversity

Answer 6

more vulnerable if a species is removed as there is less food options

Question 7

High biodiversity

Answer 7

more stable if species is removed as there are more food options

Question 8

Human activities

Answer 8

have an impact on the level of biodiversity in an area

Question 9

habitat destruction

Answer 9

native species habitats are destroyed to make way for houses, growing crops and grazing

Question 10

Deforestation

Answer 10

forests are destroyed to use land

Question 11

Climate change

Answer 11

change life cycle timing/migration patters

Question 12

Over fishing

Answer 12

fish caught at a rate quicker than the fish can reproduce

Question 13

Hunting

Answer 13

killing wild animals for sport or food

Question 14

Acid rain

Answer 14

reduce pH of surface waters and weaken trees

Question 15

Oil spills

Answer 15

oil tanker ship accidents release large quantities of toxic oil into marine enviroments killing fish and birds

Question 16

Forest fires

Answer 16

burns down habitats/kills animals

Question 17

Extinct

Answer 17

no more of a species left

Question 18

Endangered

Answer 18

species that is at risk of becoming extinct

Question 19

Conservation

Answer 19

maintaining biodiversity of endangered species

Question 20

Methods of conservation

Answer 20

• Zoos
• Wildlife reserves
• Breeding of captive animals
• passing of laws to limit hunting