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The evidence that Ottawa scientists collected in researching PCB concentrations in Alaska was that salmon were responsible for high levels of PCB. Salmon head to Alaska to spawn and the lakes with the most salmon have the highest levels of PCB.

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How do scientists collect evidence?

Scientist collect evidence by doing extensive research. Depending on what they are seeking evidence for, some researches takes an extensive period of time. Basically a research can take a day while others take 10 years or more.


Where do forensic scientists work at a crime scene?

Forensic scientists work at a crime scene to collect, document, and analyze evidence such as fingerprints, blood spatter, and DNA samples. They also collaborate with law enforcement to reconstruct the events that took place and identify potential suspects based on the evidence collected.


What are tools used to collect physical evidence?

Tools used to collect physical evidence include gloves, tweezers, swabs, evidence bags, cameras for documentation, fingerprint powder and brushes, rulers or measuring tape, and specialized kits for collecting biological samples like blood or DNA. It is crucial to use proper procedures and techniques to ensure the evidence is not contaminated or compromised.


How do you collect evidence on a crime scene?

To collect evidence at a crime scene, first document the scene thoroughly with photographs and notes. Next, identify, mark, and secure all physical evidence following proper procedures to prevent contamination. Finally, package and label each piece of evidence carefully before transferring it to a secure location for analysis by forensic experts.


What are at least three ways scientists collect data?

Scientists collect data through methods such as experiments, observations, and surveys. In experiments, variables are manipulated to observe their effects. Observations involve studying natural phenomena without interference. Surveys gather information through asking questions to a specific group of individuals.

Related Questions

How do scientists collect information?

By aksing questions like how, why, i.e, being curios and experimenting and observing


What technologies was necessary for scientists to collect enough evidence in order to form the cell theory?

Compound Microscope.


How do you think scientists collect new evidence about deep ocean?

They go underground and see what there if it is deep they can use a submarine


How do scientists collect evidence?

Scientist collect evidence by doing extensive research. Depending on what they are seeking evidence for, some researches takes an extensive period of time. Basically a research can take a day while others take 10 years or more.


What do scientists perform to collect data?

Scientists perform experiments to collect data.


Where do forensic scientists work at a crime scene?

Forensic scientists work at a crime scene to collect, document, and analyze evidence such as fingerprints, blood spatter, and DNA samples. They also collaborate with law enforcement to reconstruct the events that took place and identify potential suspects based on the evidence collected.


What does a forensic sciencetist?

Forensic scientists use scientific methods to collect, analyze, and interpret evidence from crime scenes. They help law enforcement solve crimes by providing expert analysis on various types of evidence, such as DNA, fingerprints, and ballistics. Their work aims to uncover the truth and assist in the prosecution of criminals.


What do scientists do after experiments?

organize and collect data


What do scientists do to help them collect data?

reaserch


What do scientists collect from repeated experiments?

data


How do scientists collect germanium?

Scientists collect Germanium from certain types of mineral specimens. These include Sphalerite and other ores from silver, copper, and lead.


What atmospheric layer do the scientists collect ozone samples from?

Scientists typically collect ozone samples from the stratosphere, which is the second layer of Earth's atmosphere, located above the troposphere. This layer contains the ozone layer, where ozone concentrations are significantly higher, playing a crucial role in absorbing harmful ultraviolet radiation from the sun. Sampling in the stratosphere helps researchers monitor ozone levels and understand its impact on climate and health.