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Based on the food web, if the farmer removes the rabbits, which other organisms might be directly affected?
The most realistic description of energy flow through an ecosystem is a food web that represents an interconnected series of food chains. In general, the greater the number of alternative channels through which energy can flow, the greater the stability of the food web and the ecosystem. The diagram shows...
Which of the following substances is the MOST acidic?
Review the material, then click Next to see the questions related to this material. You will be able to use an Information button to view the material on each question screen. The pH scale is a measure of the acidity of a substance. The numerical range of the scale is...
Based on the information, which statement most likely predicts the result of ongoing widespread forest fires?
The greenhouse effect explains why a car’s interior can get hot on a sunny day even if it is cool outside. The glass windows allow the Sun’s rays to pass through to the interior but prevent heat rays from escaping to the outside. Certain gases, such as carbon dioxide and...
According to the article, about 5 percent of all children born have genes containing which component?
Exhibit: According to the article, about 5 percent of all children born have genes containing which component?A . harmful viruses that produce diseaseB . information that came from one parent onlyC . no genetic informationD . information for red hairE . errors that have produced abnormalitiesView AnswerAnswer: E
Which statement best describes the relationship between the number of chirps and the air temperature?
Students in a biology class were asked to construct hypotheses about the relationship between air temperature and the number of times crickets chirp per minute. They listened to a tape of crickets chirping at six different temperatures. The students counted the number of chirps per minute and recorded their results,...
Which person would benefit the most from ingesting a moderate amount of vitamin D in supplements or in the types of food eaten?
In order to remain healthy, the human body requires a certain level of vitamin D, which is synthesized in the body. Intestinal enzymes and sunlight convert cholesterol to vitamin D. People who do not spend much time in the sun can acquire vitamin D from the food they eat or...
Which effect does the deposit have on the battery terminals?
The battery of an automobile produces electricity from a chemical reaction. This electricity leaves the battery from a post called a terminal and is used in starting the engine. Sometimes a crusty deposit forms on the terminals, preventing the engine from starting. Simply cleaning off the deposit often restores the...
Which of the following waves demonstrates the LOWEST frequency?
One wavelength is the distance from one crest of a wave to the next crest or from a trough (low point of a wave) to the next trough. The frequency of a wave is the number of crests that pass any given point each second. Which of the following waves...
Which type of bread would be the best to recommend to Ling?
Wheat is the staple cereal for most of the world. Flour is made from the kernel of the wheat plant. The kernels are first separated from the plant stem and then broken apart by the milling process. The husk, the outer layer unusable for most purposes, is removed. The wheat...
Based on the DNA diagram, which of the five children might be related to the missing child?
Our genes consist of DNA molecules. DNA fingerprinting allows the detection of DNA fragment patterns in different people. In this process, enzymes are used to "cut" a person’s DNA into pieces. The length of these fragments differs from person to person and, therefore, there is little chance that two or...
