Question

what is the formula that allows you to calculate the dependency ratio from given data? * 1 p
○ area / population
○ non working population / working population
○ population / area
○ working population / non working population

which of the following is an example of a carbon store? *
○ coral reefs
○ really big trees
○ electric vehicles

Explanation:

First Question (Dependency Ratio Formula)

The dependency ratio measures the proportion of non - working (dependent) population to the working population. Let's analyze each option:

• Option "Area / Population" calculates population density, not dependency ratio.
• Option "Non working population / working population" is the correct formula for dependency ratio as it shows the ratio of those who depend (non - working, like children and the elderly) to those who work and support them.
• Option "Population / Area" is also a measure of population density.
• Option "Working population / non working population" is the reciprocal of the dependency ratio and does not represent the dependency ratio.

A carbon store is a reservoir that accumulates and stores carbon.

• Coral reefs store carbon in their calcium carbonate structures.
• "Really big trees" is not a precise or standard term for a carbon store; forests (including trees) are carbon stores, but the option is not correctly phrased.
• Electric vehicles are a mode of transportation and do not store carbon.

Answer:

B. Non working population / working population

Second Question (Carbon Store Example)