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APES Math Exam Review Questions and Answers

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3 pages

Written in 2025/2026

Grade A+

Bensuda

Change - Answer new-old % change - Answer (new-old/old) x100 Population density - Answer population/area birth rate per thousand - Answer births * 10^3 / population Death rate - Answer births * 10^3 / population Natural growth rate per thousand - Answer births-deaths * 10^3 /population or birthrate- deathrate % natural growth - Answer births-deaths/population * 10^2 total growth as % - Answer (births + immigrants) - (deaths +...

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1 pages

Written in 2025/2026

Grade A+

COCOSOLUTIONS

Population Density - Answer total population/total area Birth Rate (as a %) - Answer (total births/total population) x 100 Crude Birth Rate (per 1000) - Answer (total # of births/total population) x 1000 Death Rate (as a %) - Answer (total deaths/total population) x 100 Crude Death Rate (per 1000) - Answer (total # of deaths/total population) x 1000 Population Growth Rate (r) - Answer (((births+immigration)-(deaths+emigration))/total population)...

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2 pages

Written in 2025/2026

Grade A+

COCOSOLUTIONS

What is the basic unit of energy? - Answer Joule What are other units of energy? - Answer Calorie, kilojoule, British Thermal Unit (BTU) and therm What is power? - Answer Rate at which energy is used What is the basic unit of power? - Answer Watt What is the formula for power? - Answer P=E/t What is the formula for energy? - Answer E=Pt What is the formula for radioactive decay half life? - Answer N(t)=N₀ (½)^t/t½

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1 pages

Written in 2025/2026

Grade A+

COCOSOLUTIONS

UNIT 1 - Answer The Living World, Ecosystems Divide 45.5 by 10 - Answer 45.5÷10 = 4.55 Divide 530.4 by 3.4 - Answer 530.4÷3.4 = 156 Divide 900 by 36,000 - Answer = 900/36,000 = 0.025 An old Honda Civic can go 348 miles on average before it runs out of gas. its tank holds 12 gallons of gas. What is the car's mpg? (miles per gallon) - Answer = 348miles/12gallons = 29 miles per gallon Find the average of the following numbers: 124, 456, and 785 ...

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24 pages

Written in 2025/2026

Grade A+

COCOSOLUTIONS

Chapter 1 Math Connection: If a made-up population has a crude birth rate of 39 and a crude death rate of 14, calculate the percent annual natural increase. Calculate the doubling time using the rule of 70. - Answer 2.5% 39 births - 14 deaths/100 x 100% = 2.5% 28 years DT = 70/2.5% = 28 years Chapter 1 Math Connection: Imagine that within a population of humans, there were 28 births per 1000 people (crude birth rate) and 10 deaths per 1000 people (crude death rate). Calculate th...

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25 pages

Written in 2025/2026

Grade A+

COCOSOLUTIONS

2.5 - Answer The net primary productivity of an ecosystem is 1 kgC/m2/year, and the energy needed by the producers for their own respiration is 1.5 kgC/m2/year. The gross primary productivity of such an ecosystem would be __________________________kgC/m2/year 0.5 - Answer The gross primary productivity of an ecosystem is 3.5 kgC/m2/year, and the energy needed by the producers for their own respiration is 3.0 kgC/m2/year. What is the net primary productivity of such an ecosystem? _...

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3 pages

Written in 2025/2026

Grade A+

COCOSOLUTIONS