Question 1

During El Niño events,primary production by phytoplankton increases sharply in the Great Salt Lake of Utah.This is because

Accepted Answer

A) water temperatures increase. 
B) nutrient concentrations are increased as lake volume shrinks. 
C) decreasing salinity allows invasion of predators that control brine shrimp populations. 
D) decreasing salinity allows invasion of more phytoplankton species. 
E) decreasing dissolved oxygen increases the efficiency of photosynthesis. 
A) water temperatures increase. 
B) nutrient concentrations are increased as lake volume shrinks. 
C) decreasing salinity allows invasion of predators that control brine shrimp populations. 
D) decreasing salinity allows invasion of more phytoplankton species. 
E) decreasing dissolved oxygen increases the efficiency of photosynthesis.

Question 2

Ozone in the stratosphere is destroyed during breakdown of ________ molecules.

Accepted Answer

chlorofluo

Question 3

The 1987 Montreal Protocol was an agreement to limit human production of

Accepted Answer

A) carbon dioxide. 
B) nitrate. 
C) PCBs. 
D) lead paint. 
E) chlorofluorocarbons. 
A) carbon dioxide. 
B) nitrate. 
C) PCBs. 
D) lead paint. 
E) chlorofluorocarbons.

Question 4

El Niño events

Accepted Answer

A) occur when the Southern Oscillation index is high. 
B) occur when barometric pressure is lower in the western Pacific than in the eastern Pacific. 
C) include the appearance of warm currents on the Pacific coast of South America. 
D) are always accompanied by La Niña events at the same time. 
E) are accompanied by westward movement of the location of storm generation in the Pacific. 
A) occur when the Southern Oscillation index is high. 
B) occur when barometric pressure is lower in the western Pacific than in the eastern Pacific. 
C) include the appearance of warm currents on the Pacific coast of South America. 
D) are always accompanied by La Niña events at the same time. 
E) are accompanied by westward movement of the location of storm generation in the Pacific.

Question 5

Which of the following gases contribute to warming of the Earth's surface through the greenhouse effect?

Accepted Answer

A) carbon dioxide 
B) methane 
C) water vapor 
D) nitrous oxide 
E) All of the choices are correct. 
A) carbon dioxide 
B) methane 
C) water vapor 
D) nitrous oxide 
E) All of the choices are correct.

Question 6

Concentrations of ozone in earth's atmosphere are highest in the

Accepted Answer

A) troposphere. 
B) stratosphere. 
C) mesosphere. 
D) thermosphere. 
E) ozonosphere. 
A) troposphere. 
B) stratosphere. 
C) mesosphere. 
D) thermosphere. 
E) ozonosphere.

Question 7

By measuring the CO2 concentration in the Vostok ice core,scientists were able to show that atmospheric CO2 concentrations fluctuated substantially over the last 160,000 years and periods of low atmospheric CO2 concentration correspond with

Accepted Answer

A) warmer interglacial periods. 
B) colder ice age periods. 
C) years of above average precipitation. 
D) years of below average precipitation. 
E) both warmer interglacial periods and years of below average precipitation. 
A) warmer interglacial periods. 
B) colder ice age periods. 
C) years of above average precipitation. 
D) years of below average precipitation. 
E) both warmer interglacial periods and years of below average precipitation.

Question 8

The __________ is the layer of atmosphere which extends from the earth's surface to an altitude of 9 to 16 km.

Accepted Answer

A) stratosphere 
B) mesosphere 
C) thermosphere 
D) troposphere 
E) ozonosphere 
A) stratosphere 
B) mesosphere 
C) thermosphere 
D) troposphere 
E) ozonosphere

Question 9

A carbon dioxide concentration record from the Vostok ice core indicates

Accepted Answer

A) little change in atmospheric CO2 concentration before the Industrial Revolution. 
B) dramatic increases in atmospheric CO2 associated with ice ages. 
C) dramatic increases in atmospheric CO2 associated with interglacials. 
D) dramatic changes in atmospheric CO2,but no obvious association with the glacial/interglacial cycle. 
E) an inverse correlation between atmospheric CO2 concentration and temperature. 
A) little change in atmospheric CO2 concentration before the Industrial Revolution. 
B) dramatic increases in atmospheric CO2 associated with ice ages. 
C) dramatic increases in atmospheric CO2 associated with interglacials. 
D) dramatic changes in atmospheric CO2,but no obvious association with the glacial/interglacial cycle. 
E) an inverse correlation between atmospheric CO2 concentration and temperature.

During El Niño events,primary production by phytoplankton increases sharply in the Great Salt Lake of Utah.This is because

Ozone in the stratosphere is destroyed during breakdown of ________ molecules.

The 1987 Montreal Protocol was an agreement to limit human production of

El Niño events

Which of the following gases contribute to warming of the Earth's surface through the greenhouse effect?

Concentrations of ozone in earth's atmosphere are highest in the

By measuring the CO₂ concentration in the Vostok ice core,scientists were able to show that atmospheric CO₂ concentrations fluctuated substantially over the last 160,000 years and periods of low atmospheric CO₂ concentration correspond with

The __________ is the layer of atmosphere which extends from the earth's surface to an altitude of 9 to 16 km.

A carbon dioxide concentration record from the Vostok ice core indicates

Introduction to Ecology: Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Water Relations

Energy and Nutrient Relations

Social Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Life Histories

Competition

Exploitative Interactions: Predation, herbivory, parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Filters

Exam 23: Global Ecology

During El Niño events,primary production by phytoplankton increases sharply in the Great Salt Lake of Utah.This is because

Ozone in the stratosphere is destroyed during breakdown of ________ molecules.

The 1987 Montreal Protocol was an agreement to limit human production of

El Niño events

Which of the following gases contribute to warming of the Earth's surface through the greenhouse effect?

Concentrations of ozone in earth's atmosphere are highest in the

By measuring the CO2 concentration in the Vostok ice core,scientists were able to show that atmospheric CO2 concentrations fluctuated substantially over the last 160,000 years and periods of low atmospheric CO2 concentration correspond with

The __________ is the layer of atmosphere which extends from the earth's surface to an altitude of 9 to 16 km.

A carbon dioxide concentration record from the Vostok ice core indicates

Introduction to Ecology: Historical Foundations and Developing Frontiers

Life on Land

Life in Water

Population Genetics and Natural Selection

Temperature Relations

Water Relations

Energy and Nutrient Relations

Social Relations

Population Distribution and Abundance

Population Dynamics

Population Growth

Life Histories

Competition

Exploitative Interactions: Predation, herbivory, parasitism, and Disease

Mutualism

Species Abundance and Diversity

Species Interactions and Community Structure

Primary Production and Energy Flow

Nutrient Cycling and Retention

Succession and Stability

Landscape Ecology

Geographic Ecology

Filters

By measuring the CO₂ concentration in the Vostok ice core,scientists were able to show that atmospheric CO₂ concentrations fluctuated substantially over the last 160,000 years and periods of low atmospheric CO₂ concentration correspond with