unit 3

Cards (15)

methods of controlling pests
spraying crops with pesdicides
biological control
genetic modification
what is a prymid of energy
shows the relative energy passed on at each stage of a food chain
what is a prymid of numbers
thye numbers of each stage of a foods chain
what are the two stages of photosynthesis
light reactions
carbon fixiation
what is an indicator species
species that by their presence or absence indicate enviromental quality and levels of pollution
examples of abiotic factors
light intensity
tempature
PH
moisture
examples of biotic factors
grazing
predation
food avability
disease
competition for enviromental resources
how to sample a biotic factor  
quadrant
pitfall trap
how to sample abiotic factor
mouister meter
ph meter
light meter
what are limiting factors of photosynthesis
light intensity
carbon dioxide concentration
tempature
what is a niche
the role that an organism plays within a community
how do you control limiting factors
heaters
suplementary lighting
what is a habitat
the place where an organism lives
types of fertlisers (N.P.K)
nitrogen
phosphorus
pottassium
what is a communite
all the living organisms that live within a habitat