4.15 and 4.16

explain how using plant based materials can improve sustainability

sustainablility=using resources in a way that also maintains them for future gens

plan fibres are biodegradable and cheap (fabrics)

starch extracted from crops to be regrown (biofuel)

conservation

protection and management of species and habitats in order to maintain biodiversity

ex situ examples

captive breeding and seed banks

in situ examples

scientific research and education

advantages of ex situ

requires little space eliminates predators and poachers

disadvantages

expensive

cannot fully recreate natural habitat

diseases spreads quickly

advantages of in situ

protects more than one species

cheap

few resources required

disadvantages

hard to enforce legislation

pops may still decline