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One characteristic of all living things is that they*
The diagram below represents interactions between organisms in a stable ecosystem.
Which statement correctly describes organisms in this ecosystem?*
Due to overfishing, the number of fish in the ocean could drastically decrease. This will cause*
Which substance can enter a cell by diffusion without having to be digested?*
A single-celled organism is represented below.
Structure X carries out a function most similar to which structure in a human?*
Parrots are tropical birds. However, in some areas of New York City, some parrots have been able to survive outdoors year-round. These parrots survive, while most others cannot, due to*
Changing one base in a gene could have the most direct effect on the*
An alteration of genetic information is shown below.
A-G-T-A-C-C-G-A-T → A-G-T-G-A-T
This type of alteration of the genetic information is an example of*
The table below shows adaptations in two organisms.
The presence of these adaptations is most likely the result of*
The diagram below represents an activity that occurs in the human body.
This diagram best illustrates*
In which row in the chart below is a human action correctly paired with its environmental impact?
A laboratory technique is represented in the diagram below. Letter A represents a process.
Which specific chemicals are needed to success- fully carry out the process shown at A?*
The diagram below represents genetic material.
The expression of the section labeled X may be modified by*
Characteristics that are harmful to a species tend to decrease in frequency from generation to generation because these characteristics usually*
Which situation results in a characteristic that is inheritable?*