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The characteristics in the table that best supports the claim that country A is a more developed country and that country B is a less developed country is Infant mortality rate
- Infant mortality rate is known as the number of newborns that are present in a known geographic area. It can be in a country, state, county etc.
It is often measured by the death under one year of age divided by the number of live births present for the same geographic area usually a a specific year and thereafter it is multiplied by 1,000.
The country that has the highest infant mortality rate as at 2021 is Afghanistan
Developed nations are known as as countries that are more industrialized in nature and tend to be wealthy ( higher per capita income levels).
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Answer:

Explanation:
Given
--- monthly expense

Required
The total expenses
First, we calculate the annual billing



The family's total expenses (y) is calculated by adding the annual billing and the extra expense


Answer:
New GPP
kcal/m2
Explanation:
Given -
Number of new trees planted 
Before planting new trees, the gross annual primary productivity of a particular wetland ecosystem
kcal/m2
The increase in gross primary productivity
%
The new GPP will be equal to
Existing GPP +
% of Existing GPP
Substituting the given values, we get -

New GPP
kcal/m2