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In an ecosystem, a sudden decrease in the number of bacteria in the soil would most likely result in
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
Which helps scientists best determine the age of fossils?
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
Students used a dissolved oxygen probe during a laboratory activity involving 1000 mL samples of pond water. The function of the probe is to
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
To classify an organism a scientist finds in the field, which of these will the scientist first compare to other known organisms?
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
The weakness of hydrogen bonds between the bases of DNA allows:
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
Studying the differences between fossils and modern organisms helps scientists better understand the:
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
Which of these would most likely result in a change to the current classification of an organism?
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
Medicines are being produced using recombinant DNA technology. For veterinarians, the use of this DNA technology will result in
making more treatments available to pets
gather accurate data
a reduction in the amount of nitrogen available to the ecosystem
evolution of organisms over time
Radioactive isotopes
Linking the organism to different ancestors through DNA sequencing
base pairs to separate during transcription and replication
Physical structure
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