Please enable JavaScript.
Coggle requires JavaScript to display documents.
biology (pollution (can occur: (in water (sewage, fertelisers or toxic…
biology
pollution
kills plants and animals which can reduce biodiversity
can occur:
in water
sewage, fertelisers or toxic chemicals
in air
smoke and acidic gasses
on land
landfill and toxic chemicals
more waste = more pollution
farmers spray crops with fertilisers
herbicides/ pesticides
washed into rivers, lakes and seas
rubbish is placed into landfill
toxic chemicals such as poisonous metals
fertilisers in water encourage algae growth
reduction in oxygen for fish = death
air pollution
soot on buildings and trees
acid rain
global warming
deforistation
reduces the rate at which carbon dioxide is absorbed
burning wood increases the amount of carbon dioxide in the atmosphere
microorganisms decompose the roots = more carbondioxide in the atomsphere
biofuels
natural products
renewable
theoretically carbon nuetral
transport in cells
diffusion
high concentration to a low concentration through a semi-permiable membrane
higher tempriture = faster rate of diffusion
SA:V
low SA:V = better at diffusion
smaller particles fit through SPM easier
high SA:V = worse at diffusion
large particles cannot fit through SPM
5 places of diffusion
lungs
alveoli
fish
gills
rott hair cells
small intestine
villi - sugar + food into blood
leaf
C02 in O2 + H2O out
osmosis
water (H2O) only
low concentration of salt to high concentration if salt through a SPM
hypotonic cells
low salt concentration
water rushes in causing the cell to explode
hypertonic cells
high salt concentration
water rushes out causing the cell to shrivel
active transport
low concentration to high concentration???
requires energy
goes against the concentration gradient
root hair cell + small intestine