ESRM 100 EXAM 1 QUESTIONS & ANSWERS
The subject of this course is: - Answers -Environmental Science
Why do areas near large bodies of water have moderate climates? - Answers -It takes
a lot of energy to change the temperature of water due to hydrogen bonding.
Water that moves across the surface of the land into streams and rivers is called -
Answers -runoff
Cattle egrets are known for standing on the backs of cows and other herbivores which
kick up insects as they forage, creating an easily accessible food source for the egrets.
The cattle themselves do not receive any benefit from this interaction. What type of
interspecific interaction is this? - Answers -Commensalism
A species that plays a major role in determining the structure of its ecological
community is - Answers -a keystone species
The poorest __% of the world's people consume approximately __% of the world's
energy, paper, fish, and meat. - Answers -20; 5
Living in an environmentally sustainable way necessitates - Answers -sensitivity to the
needs of future generations
A dung beetle, which breaks down dead tissue and waste products, is an example of -
Answers -detritivore
Which of the following BEST describes the reason for the very rapid growth of the
human populations in the last 8000 hears? - Answers -Technology has allowed
humans to increase their environment's carrying capacity
A close interaction between two different species, in which one species benefit and the
other is unaffected, is called - Answers -Commensalism
The glass frog found in Costa Rica can produce as many as 200 offspring per year.
Despite protecting eggs while they develop, the hatched tadpoles are left to fend for
themselves. The reproductive strategy of glass frogs can be categorized as: - Answers
-R-selected
Solar radiation enters the Earth system, and energy leaves it in the form of heat and
reflected light. Therefore, with respect to energy, Earth is - Answers -an open system
Which of the following is an abiotic factor? - Answers -Sunlight
, Which type of species would be most vulnerable to environmental changes? - Answers
-Niche specialists
Normal rainwater has a pH of about 5.65, whereas acid rain, which can have a pH of
around 4, is approximately ___ times more acidic. - Answers -45
If all people on earth consumed the same amount as the average American,
approximately how many Earth's would it take to support the population? - Answers -5
Which of the following is a true statement? - Answers -Uncertainty is an estimate of
how much a measured or calculated value differs from a true value.
Population growth rates are high in developing countries because - Answers -children
are often an important economic advantage
After the retreat of a glacier, the exposed rocks begin to grow lichen and mosses. Over
100 years, the land is overtaken by shrubs and finally a broadleaf forest of beech and
maple trees. This process is an example of - Answers -primary succession
When genetic changes give rise to new species the process is called - Answers -
macroevolution
An idea that has been repeatedly tested and confirmed by multiple groups of
researched is called a - Answers -theory
Evidence of biodiversity is seen most directly in the - Answers -number of species in a
region
Which of the following is an organic compound - Answers -C2H6
Phosphorus is a major component of DNA, RNA, and ____, which is used by cells for
energy transfer - Answers -ATP
Which of the following statements "replacement-level fertility"? - Answers -The total
fertility rate necessary to ensure that a population reminds stable
Which of the following correctly lists substances from highest to lowest pH? - Answers -
household bleach --> seawater --> rainwater --> stomach fluid
Which of the following countries has the highest ecological footprint per capita? -
Answers -United States
Education typically has what effect on fertility rate? - Answers -More educated
demographics typically have lower total fertility rates
The subject of this course is: - Answers -Environmental Science
Why do areas near large bodies of water have moderate climates? - Answers -It takes
a lot of energy to change the temperature of water due to hydrogen bonding.
Water that moves across the surface of the land into streams and rivers is called -
Answers -runoff
Cattle egrets are known for standing on the backs of cows and other herbivores which
kick up insects as they forage, creating an easily accessible food source for the egrets.
The cattle themselves do not receive any benefit from this interaction. What type of
interspecific interaction is this? - Answers -Commensalism
A species that plays a major role in determining the structure of its ecological
community is - Answers -a keystone species
The poorest __% of the world's people consume approximately __% of the world's
energy, paper, fish, and meat. - Answers -20; 5
Living in an environmentally sustainable way necessitates - Answers -sensitivity to the
needs of future generations
A dung beetle, which breaks down dead tissue and waste products, is an example of -
Answers -detritivore
Which of the following BEST describes the reason for the very rapid growth of the
human populations in the last 8000 hears? - Answers -Technology has allowed
humans to increase their environment's carrying capacity
A close interaction between two different species, in which one species benefit and the
other is unaffected, is called - Answers -Commensalism
The glass frog found in Costa Rica can produce as many as 200 offspring per year.
Despite protecting eggs while they develop, the hatched tadpoles are left to fend for
themselves. The reproductive strategy of glass frogs can be categorized as: - Answers
-R-selected
Solar radiation enters the Earth system, and energy leaves it in the form of heat and
reflected light. Therefore, with respect to energy, Earth is - Answers -an open system
Which of the following is an abiotic factor? - Answers -Sunlight
, Which type of species would be most vulnerable to environmental changes? - Answers
-Niche specialists
Normal rainwater has a pH of about 5.65, whereas acid rain, which can have a pH of
around 4, is approximately ___ times more acidic. - Answers -45
If all people on earth consumed the same amount as the average American,
approximately how many Earth's would it take to support the population? - Answers -5
Which of the following is a true statement? - Answers -Uncertainty is an estimate of
how much a measured or calculated value differs from a true value.
Population growth rates are high in developing countries because - Answers -children
are often an important economic advantage
After the retreat of a glacier, the exposed rocks begin to grow lichen and mosses. Over
100 years, the land is overtaken by shrubs and finally a broadleaf forest of beech and
maple trees. This process is an example of - Answers -primary succession
When genetic changes give rise to new species the process is called - Answers -
macroevolution
An idea that has been repeatedly tested and confirmed by multiple groups of
researched is called a - Answers -theory
Evidence of biodiversity is seen most directly in the - Answers -number of species in a
region
Which of the following is an organic compound - Answers -C2H6
Phosphorus is a major component of DNA, RNA, and ____, which is used by cells for
energy transfer - Answers -ATP
Which of the following statements "replacement-level fertility"? - Answers -The total
fertility rate necessary to ensure that a population reminds stable
Which of the following correctly lists substances from highest to lowest pH? - Answers -
household bleach --> seawater --> rainwater --> stomach fluid
Which of the following countries has the highest ecological footprint per capita? -
Answers -United States
Education typically has what effect on fertility rate? - Answers -More educated
demographics typically have lower total fertility rates
