R
D
R
C
P
The effects of the combustion of fossil fuels and
the cutting down of forests on the carbon dioxide
concentrations in the atmosphere
• Research on any 5 countries and their amount of carbon dioxide
emitted in a given year (2016 onwards)
• Plot a bar chart showing the carbon dioxide emission for your chosen
countries (you can do it on excel or google sheet)
• Write briefly the reasons why the countries had a lower or higher
amount of carbon dioxide emission.
• Post your task on google classroom.
Hydrologic cycle
Condensation
Underground/ oceans/lakes/rivers
transpiration
Gas/vapour
evaporation
Precipitation/ raining
Accumulated/ underground water
true
False
Nitrogen cycle
The Nitrogen Cycle
1. Nitrogen FixationNitrogen > ammonium
3
4
1
2
2. Nitrification by
nitrifying bacteria
ammonium > nitrates
> amino acids by
plants
3. Feeding and
digestion of protein:
moving along food
chains and excretion
4. Denitrification- by
denitrifying bacteria
nitrates > nitrogen(g)
5
1
5. Decomposition- by
detritivores- amino
acids converted to
ammonium
78%
atmosphere
nitrogen fixing
protein
ammonia
nitrates
Denitrificating
plants
waste
animals
plants
(a)
(b)
(d) Root nodules in
roots of leguminous
plants
Nitrogen fixing
bacteria
Converts Nitrogen gas
into ammonium- fix
nitrogen into plants
(c)