Transfer of Energy & Matter (SL IB Biology)

Which of the following statements about inorganic nutrients are correct? 

1. Living organisms gain all of their inorganic nutrients from the abiotic environment.
2. Inorganic nutrients include simple compounds of carbon, hydrogen, oxygen, and nitrogen.
3. Organisms need inorganic nutrients to build organic molecules.

The energy transferred from the sun to the grass in this food chain is 65 000 kJ m^-2 year^-1.

 Approximately how much energy is passed from the shrew to the owl in kJ m^-2 year^-1?

Which pyramid of energy correctly represents the food chain shown?

Algae → caddis fly larvae → small fish → kingfisher

Which of the following statements about the removal of carbon from the atmosphere are correct?

1. Atmospheric carbon is converted into carbohydrates during photosynthesis.
2. Carbon enters the cells of aquatic plants by diffusing directly from the surrounding water.
3. Carbon combines with water to form carbonic acid, which dissociates to form hydrogen carbonate ions, raising the pH of water.

What can be concluded about levels of atmospheric carbon dioxide from the graph shown?

What is the benefit of collecting accurate, quantitative data on atmospheric carbon dioxide levels?

The diagram below shows the stages of the carbon cycle.

Which processes are shown in the diagram?

Which row of the table correctly identifies an observation of food chains and the theory used to explain that observation?