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Koala 305 cm herbivore 10 kg
Dog 135 cm carnivore 11 kg
Rabbit 272 cm herbivore 9 kg
Bobcat 145 cm carnivore 12 kg
What conclusion can you draw from the data in the table above regarding carnivores and herbivores?
(1 point)
Responses
There is no correlation between diet and length of digestive system.
There is no correlation between diet and length of digestive system.
Carnivores have shorter digestive systems than herbivores.
Carnivores have shorter digestive systems than herbivores.
Herbivores have shorter digestive systems than carnivores.
Herbivores have shorter digestive systems than carnivores.
The length of the digestive system is directly related to the weight of an animal.
The correct conclusion that can be drawn from the data is that carnivores have shorter digestive systems than herbivores.
A farmer wants to test the affects of a pesticide on his peach crop yield, so he sprays an orchard with the pesticide treatment. A second orchard does not receive the pesticide. In the fall, the number of peaches harvested from each orchard is counted. Which of the following is the independent (manipulated) variable in the experiment?(1 point)
Responses
the pesticide
the pesticide
the second orchard
the second orchard
the first orchard
the first orchard
the number of peaches
The independent (manipulated) variable in this experiment is the pesticide.
A theory(1 point)
Responses
is a problem to be solved.
is a problem to be solved.
may be revised or replaced.
may be revised or replaced.
is always true.
is always true.
is the opening statement of an experiment.
is the opening statement of an experiment.
A theory is a well-substantiated explanation of some aspect of the natural world that is based on a body of evidence and can be revised or replaced if new evidence or interpretations arise.
Which of the following is not included in the design of an laboratory experiment?(1 point)
Responses
Materials used
Materials used
Conclusion
Conclusion
Procedure
Procedure
Problem statement
Conclusion is not typically included in the design of a laboratory experiment. The conclusion is the result or outcome of the experiment and is usually stated or analyzed at the end of the experiment.
Scientists form hypotheses from which of the following?(1 point)
Responses
prior knowledge.
prior knowledge.
logical inferences.
logical inferences.
informed, creative imagination.
informed, creative imagination.
all of the above
all of the above
Scientists form hypotheses from all of the above: prior knowledge, logical inferences, and informed, creative imagination.
A scientist finds that her hypothesis is not supported by the data she gathered as a result of her experiment. What conclusion can she reach?(1 point)
Responses
The data are incorrect.
The data are incorrect.
The data do not support the hypothesis.
The data do not support the hypothesis.
The hypothesis is wrong.
The hypothesis is wrong.
Her observations were biased.
The scientist can conclude that the data do not support the hypothesis.
[This iYou suggest that the absence of water could slow the growth of mold on bread slices. This is a(an)
s the stem.](1 point)
Responses
experiment.
experiment.
hypothesis.
hypothesis.
analysis.
analysis.
conclusion.
conclusion.
The statement "You suggest that the absence of water could slow the growth of mold on bread slices" is a hypothesis.
When/where are safety procedures important?(1 point)
Responses
in a laboratory.
in a laboratory.
in the field.
in the field.
with animals.
with animals.
all of the above
all of the above
Safety procedures are important in all of the above contexts: in a laboratory, in the field, and when working with animals.
What will you study in Biology?(1 point)
Responses
the land, water, and air on Earth.
the land, water, and air on Earth.
the environment.
the environment.
the living world.
the living world.
animals and plants only.
In Biology, you will study the living world, which includes animals, plants, and all aspects of the environment.
A hypothesis becomes something different when an acceptable amount of experimental data supports it. What does it become?(1 point)
Responses
fact
fact
theory
theory
inference
inference
conclusion
When an acceptable amount of experimental data supports a hypothesis, it can become a theory.
When is a hypothesis useful in science?(1 point)
Responses
When it can be proven incorrect.
When it can be proven incorrect.
When the explanation is already known.
When the explanation is already known.
When it is proven correct.
When it is proven correct.
When it can be tested.
When it can be tested.
A hypothesis is useful in science when it can be tested. Testing a hypothesis allows for the evaluation of its validity and helps in furthering scientific understanding.
What does a scientist test when using a controlled experiment?(1 point)
Responses
a mass of information.
a mass of information.
several variables.
several variables.
a single variable.
a single variable.
a conclusion.
a conclusion.
When using a controlled experiment, a scientist typically tests a single variable. This allows them to isolate and examine the specific impact or effect of that variable on the experiment's outcome.
Which of the following statements are valid steps in the scientific method? Select all that apply.(4 points)
Responses
Check the internet for previous experiments
Check the internet for previous experiments
Evaluate results
Evaluate results
Form a hypothesis
Form a hypothesis
Verify the question
The valid steps in the scientific method are:
Evaluate results
Form a hypothesis
Verify the question
Which statement offers the best critique of how humans have impacted the environment through agricultural activities?(1 point)
Responses
Chemicals applied on agricultural crops have led to the lessening of cultural eutrophication.
Chemicals applied on agricultural crops have led to the lessening of cultural eutrophication.
The agricultural practice of slash and burn does not impact the physical environment in modern times.
The agricultural practice of slash and burn does not impact the physical environment in modern times.
Human agricultural activities have always impacted the physical environment.
Human agricultural activities have always impacted the physical environment.
Humans did not impact the physical environment until the last 150 years.
The statement "Human agricultural activities have always impacted the physical environment" offers the best critique of how humans have impacted the environment through agricultural activities. It acknowledges that human agricultural practices have historically had an impact on the environment.
Which option correctly identifies a result of agricultural practices? (1 point)
Responses
biodiversity
biodiversity
soil erosion
soil erosion
water diversion
water diversion
slash and burn agriculture
slash and burn agriculture
The correct result of agricultural practices identified from the options provided is soil erosion. Agricultural practices can contribute to soil erosion through activities such as improper land management, excessive tilling, and removal of vegetation cover.
Which of the following critiques of forestry’s impact on the physical environment is a positive effect?(1 point)
Responses
Recreational use can engage more people with forest conservation.
Recreational use can engage more people with forest conservation.
Low regulation of fires increases the amount of slash and burn agriculture that occurs.
Low regulation of fires increases the amount of slash and burn agriculture that occurs.
Forestry can lead to the removal of carbon sinks.
Forestry can lead to the removal of carbon sinks.
Deforestation can cause soil erosion and landslides.
The critique of forestry's impact on the physical environment that is a positive effect is: "Recreational use can engage more people with forest conservation." This suggests that recreational activities in forests can raise awareness and involvement in conserving forest resources.
Which statement best explains what happened to wetland resources and ecosystem services after the 1970s in the U.S.?(1 point)
Responses
Wetlands began to deplete groundwater, leading to policies that favored draining wetlands.
Wetlands began to deplete groundwater, leading to policies that favored draining wetlands.
The Watershed Protection and Flood Prevention Act, passed in 1980, required the destruction of all wetlands throughout the U.S.
The Watershed Protection and Flood Prevention Act, passed in 1980, required the destruction of all wetlands throughout the U.S.
Increased knowledge of the role of wetlands in preserving ecosystem services led to policies to restore and protect wetlands.
Increased knowledge of the role of wetlands in preserving ecosystem services led to policies to restore and protect wetlands.
Flooding due to wetlands led to a decrease in the number of wetlands.
The statement that best explains what happened to wetland resources and ecosystem services after the 1970s in the U.S. is: "Increased knowledge of the role of wetlands in preserving ecosystem services led to policies to restore and protect wetlands." As awareness grew about the importance of wetlands in maintaining ecosystem functions, there was a shift towards implementing policies to restore and protect these valuable resources.
Which term best describes a process that supports human life and economies at no cost to humans?(1 point)
Responses
externality
externality
natural resource
natural resource
ecosystem service
ecosystem service
biodiversity
The term that best describes a process that supports human life and economies at no cost to humans is "ecosystem service." Ecosystem services are the benefits that humans receive from ecosystems, such as clean air, water purification, climate regulation, and pollination, among others, which are provided by nature without monetary cost.
Critique each of the following statements and choose the most accurate.(1 point)
Responses
The trend toward urbanization has lessened light and water pollution.
The trend toward urbanization has lessened light and water pollution.
The trend toward urbanization has brought many benefits to people and societies, but many consequences too.
The trend toward urbanization has brought many benefits to people and societies, but many consequences too.
The trend toward urbanization has brought many benefits to people and societies and no environmental consequences.
The trend toward urbanization has brought many benefits to people and societies and no environmental consequences.
The trend toward urbanization has increased wildlife habitat and decreased water pollution.
The trend toward urbanization has increased wildlife habitat and decreased water pollution.
1. The statement "The trend toward urbanization has lessened light and water pollution" cannot be considered accurate without further evidence. While urbanization can lead to advancements in technology and infrastructure that may reduce pollution, it can also result in increased energy consumption, waste generation, and urban runoff, contributing to pollution.
2. The statement "The trend toward urbanization has brought many benefits to people and societies, but many consequences too" is a more accurate and balanced statement. Urbanization does bring various benefits like improved access to services and opportunities, but it also brings challenges such as increased pollution, strain on resources, and loss of natural habitats.
3. The statement "The trend toward urbanization has brought many benefits to people and societies and no environmental consequences" is not accurate. Urbanization inevitably has environmental consequences, including habitat destruction, air and water pollution, energy consumption, and carbon emissions.
4. The statement "The trend toward urbanization has increased wildlife habitat and decreased water pollution" is not accurate in general. Urbanization usually causes habitat loss and fragmentation, which can negatively impact wildlife. Additionally, while efforts can be made to mitigate water pollution in urban areas, it is generally challenging to achieve significant reductions due to the increased human activities and infrastructure in urban environments.
Therefore, the most accurate statement is: "The trend toward urbanization has brought many benefits to people and societies, but many consequences too."
Which impact on the physical environment does acid rain cause?(1 point)
Responses
conversion of land to agriculture
conversion of land to agriculture
depletion of groundwater
depletion of groundwater
increased tree death
increased tree death
smog
The impact on the physical environment that acid rain causes is increased tree death. Acid rain, formed when pollutants like sulfur dioxide and nitrogen oxides react with atmospheric moisture, can damage trees through foliar damage, nutrient leaching, and soil acidification, leading to increased mortality of trees in affected areas.
Which of the effects of irrigation on the world’s environment is a criticism of using reservoirs?(1 point)
Responses
Flooding can potentially occur and harm wildlife and land.
Flooding can potentially occur and harm wildlife and land.
Groundwater can be contaminated by plastic.
Groundwater can be contaminated by plastic.
Waste byproducts can contaminate land when not safely disposed of.
Waste byproducts can contaminate land when not safely disposed of.
Crops can be contaminated and harm the people who consume them.
Among the effects of irrigation on the world's environment, the criticism associated with using reservoirs is that flooding can potentially occur and harm wildlife and land. Large reservoirs used for irrigation purposes can disrupt natural water flow patterns and, in case of extreme weather events or improper management, lead to flooding that can negatively impact local ecosystems and land.
Which of the following is an effect of desalination on the environment?(1 point)
Responses
Crops can be contaminated.
Crops can be contaminated.
Flooding can occur.
Flooding can occur.
Groundwater can be overdrawn.
Groundwater can be overdrawn.
Brine can kill ocean wildlife.