(a)[3]
Explain how the rising concentration of carbon dioxide in the atmosphere is causing global warming.
(b(i))[2]
Complete the balanced symbol equation for photosynthesis as follows: $6\text{CO}_2 + [BLANK] \rightarrow [BLANK] + [BLANK]$.
(b(ii))[2]
Starting with 2 tonnes of seaweed, calculate the biomass expected after 40 days of growth.
(c(i))[2]
Explain why nitrates are important to plants.
(c(ii))[2]
Explain how this will help the carbon remain trapped in the dead seaweed.