APES Math Review

Sugar beets have a gross primary productivity (GPP) of 160 g/m2/day. They have a respiration rate of 25%. What amount of their GPP is used for respiration?

• 40 g/m2/day

• 4000 g/m2/day

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-4

NGSS.HS-LS2-5

If a population grows at a rate of 8.5%, how long will it take that population to double?

• 5.95 years

• 595 years

• 8.24 years

If an incandescent light bulb used for lighting has an efficiency rating of 5%, then for every 1.00 joule of electric energy consumed by the bulb, which of the following is produced?

• 1.05 joules of light energy

• 1.05 joules of heat energy

• 0.95 joules of light energy

• .05 joules of light energy

Tags

NGSS.MS-PS3-5

Based on the data in the graph, by approximately what percent did the sea ice decrease from 1980 to 2005 ?

• 10%

• 30%

• 50%

• 70%

Sugar beets have a gross primary productivity (GPP) of 160 g/m2/day. They have a respiration rate of 25%. What is their net primary productivity?

• 200 g/m2/day

• 120 g/m2/day

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The combustion of one gallon of automobile fuel produces about 5 pounds of carbon (in CO2). Two autos are making a trip of 600 miles. The first auto gets 20 miles per gallon, the second gets 30 miles per gallon. Approximately how much LESS carbon (in CO2) will be produced by the second automobile on this trip?

• 10 lbs carbon

• 20 lbs carbon

• 50 lbs carbon

• 100 lbs carbon

If a population grows at a rate of 3%, how long will it take that population to double?

• 210 years

• 23.3 years

• 21 years

The net annual primary productivity of a particular wetland ecosystem is found to be 8,000 kcal/m2 per year. If respiration by the aquatic producers is 12,000 kcal/m2 per year, what is the gross annual primary productivity for this ecosystem, in kcal/m2 per year?

• 4,000

• 8,000

• 12,000

• 20,000

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Energy flow in Lake Fremont (kcal/m2/year

Trophic level Energy Consumed Waste Energy GPP NPP

Producers --- 1,500,000 10,000 8,000

Primary Consumers 2,000 1,600 200 180

Secondary Consumers 160 100 40 10

In the community described above, which of the following represents the respiratory energy (kcal/m2/year) used by autotrophs?

• 10

• 200

• 2,000

• 10,000

Tags

NGSS.MS-LS2-3

The half-life of radon gas is approximately four days. Four weeks after the introduction of radon into a sealed room, the fraction of the original amount remaining is closest to

• 1/2

• 1/8

• 1/64

• 1/128

Tags

NGSS.HS-PS1-8