ESS Formulas and Command terms

Give the precise meaning

draw

label diagram

give brief sequence of answers (no explainations)

obtain a value for quantity

give specific name, value or other brief answer (no explanation or calculation)

add brief notes to a diagram

Subtract respiratory losses (R) from gross primary productivity (GPP).

NPP = GPP - R

total energy or biomass assimilated by consumers and is calculated by subtracting the mass of fecal loss from the mass of food consumed

GSP = food eaten - fecal loss

calculated by subtracting respiratory losses (R) from GSP.

NSP = GSP - R

= (# of births / population size) x1000

= (# of deaths / population size) x 1000

= (CBR - CDR)/10
(migration is ignored)

= average no of children/woman

= time in years to double the population size

glucose + oxygen -> carbon dioxide + water

carbon dioxide + water -> glucose + oxygen

- measures the abundance of motile organisms using capture-mark-recapture

n1*n2/ nm


- n1 is the number caught in the first sample
- n2 is the number caught in the second sample
- nm is the number caught in the second sample that were marked.

- measures species diversity in two similar habitats. Remember, higher the value of D, greater the diversity. A lower value in one habitat may indicate human impact.

D= N(N-1)/ (n-1)

- D is the Simpson diversity index.
- N is the total number of organisms of all species found.
- n is the number of individuals of a particular species.

= ((final - original) / original number) × 100

Use an idea, equation, principle, theory or law in relation to a given problem or issue.

Obtain a numerical answer showing the relevant stages of working.

Give a detailed account.

Make clear the differences between two or more concepts or items.

Obtain an approximate value.

Provide an answer from a number of possibilities.

Give a brief account or summary. (define, explain)

Break down in order to bring out the essential elements or structure.

Give a judgment based on a given statement or result of a calculation.

Give an account of similarities and differences between two (or more) items or situations, referring to both (all) of them throughout.

Display information in a diagrammatic or logical form.

Reach a conclusion from the information given.

Manipulate a mathematical relationship to give a new equation or relationship.

Produce a plan, simulation or model.

Obtain the only possible answer.

Offer a considered and balanced review that includes a range of arguments, factors or hypotheses. Opinions or conclusions should be presented clearly and supported by appropriate evidence.

Make an appraisal by weighing up the strengths and limitations.

Give a detailed account, including reasons or causes.

Give valid reasons or evidence to support an answer or conclusion.

Give an expected result.

Obtain the answer(s) using algebraic and/or numerical methods and/or graphical methods.

Propose a solution, hypothesis, or other possible answers.

Consider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument.