BIOL 1060 - Homework #7 Questions and Answers
Drag each of these factors into the appropriate ANSWERS - 0.9 billion metric tons
bin. - ANSWERS - Factors that contribute
to warming:
- Carbon dioxide (CO2) from fossil fuel What was the percent change in CO2emissions
combustion for transportation from 1980 to 2005? -
- Tropospheric ozone (O3) ANSWERS - 36%
- Methane (CH4) from decomposition and
feedlots
- Nitrogen oxides (N2O) from denitrification and If U.S. population increased 32% from 1980 to
fossil fuel combustion 2005, how would you describe the change in per
- Parts of Earth's surface with low reflectivity (low capita CO2 emissions for electricity generation? -
albedo) ANSWERS - As population increased, per
- Black carbon aerosols and soot particles capita CO2 emissions increased twice as fast.
Factors that contribute to cooling:
- Condensed water vapor (cloud albedo) Now compare the change in GDP to the change
- Parts of Earth's surface with high reflectivity in CO2 emissions from electricity generation. If
(high albedo) GDP more than doubled from 1980 to 2005, what
is the ratio of changes in CO2 emissions to
changes in GDP for that period of time? -
In the Arctic, scientists are using a device called
ANSWERS - Less than 1:1, showing a
the "rosette." The rosette helps the scientists
slight CO2decrease per unit of economic activity
__________. - ANSWERS - sample water
from surface to seabed
Which of the following emission reduction
strategies would result in the greatest overall
In the Arctic, factors that __________. -
decrease in CO2? - ANSWERS - A 10%
ANSWERS - reduce phytoplankton decrease in both electricity generation and
populations will most likely reduce fish transportation emissions
populations
1. A physiologist incubates eggs in the lab at a
What organisms, abundant in the Arctic range of temperatures to see what temperatures
ecosystem, produce about half the oxygen we produce males & what temperatures produce
breathe? - ANSWERS - phytoplankton females. - ANSWERS - no; manipulative
Recent, warmer Arctic temperatures have meant 2. A biologist predicts that shade might influence
that polar bears have __________. - ground temperature, and therefore turtle sex
ANSWERS - less food and must spend ratios. He records the sex ratio of turtle
more time swimming hatchlings in shaded & unshaded regions. -
ANSWERS - yes; observational
What was the overall change in CO2emissions
for electricity generation from 1980 to 2005? - 3. An ecologist predicts turtles grow larger when
1/4
Drag each of these factors into the appropriate ANSWERS - 0.9 billion metric tons
bin. - ANSWERS - Factors that contribute
to warming:
- Carbon dioxide (CO2) from fossil fuel What was the percent change in CO2emissions
combustion for transportation from 1980 to 2005? -
- Tropospheric ozone (O3) ANSWERS - 36%
- Methane (CH4) from decomposition and
feedlots
- Nitrogen oxides (N2O) from denitrification and If U.S. population increased 32% from 1980 to
fossil fuel combustion 2005, how would you describe the change in per
- Parts of Earth's surface with low reflectivity (low capita CO2 emissions for electricity generation? -
albedo) ANSWERS - As population increased, per
- Black carbon aerosols and soot particles capita CO2 emissions increased twice as fast.
Factors that contribute to cooling:
- Condensed water vapor (cloud albedo) Now compare the change in GDP to the change
- Parts of Earth's surface with high reflectivity in CO2 emissions from electricity generation. If
(high albedo) GDP more than doubled from 1980 to 2005, what
is the ratio of changes in CO2 emissions to
changes in GDP for that period of time? -
In the Arctic, scientists are using a device called
ANSWERS - Less than 1:1, showing a
the "rosette." The rosette helps the scientists
slight CO2decrease per unit of economic activity
__________. - ANSWERS - sample water
from surface to seabed
Which of the following emission reduction
strategies would result in the greatest overall
In the Arctic, factors that __________. -
decrease in CO2? - ANSWERS - A 10%
ANSWERS - reduce phytoplankton decrease in both electricity generation and
populations will most likely reduce fish transportation emissions
populations
1. A physiologist incubates eggs in the lab at a
What organisms, abundant in the Arctic range of temperatures to see what temperatures
ecosystem, produce about half the oxygen we produce males & what temperatures produce
breathe? - ANSWERS - phytoplankton females. - ANSWERS - no; manipulative
Recent, warmer Arctic temperatures have meant 2. A biologist predicts that shade might influence
that polar bears have __________. - ground temperature, and therefore turtle sex
ANSWERS - less food and must spend ratios. He records the sex ratio of turtle
more time swimming hatchlings in shaded & unshaded regions. -
ANSWERS - yes; observational
What was the overall change in CO2emissions
for electricity generation from 1980 to 2005? - 3. An ecologist predicts turtles grow larger when
1/4
