Answer:
The prime advantage of using electromagnets in a device is that it can be easily turned on and off.
Explanation:
The formation of electromagnets is done by winding a wire via a magnetic substance and then passing an electric current through it. The durability of the electromagnet relies upon the size of the electric current via the coil and the number of coils.
On the other hand, the regular magnets do not need power, however, it is reliant upon the kind of material that is, used to produce it. Thus, it is advantageous to utilize electromagnets in comparison to permanent magnets as the strength of the electromagnet can be amended easily by monitoring the concentration of current flowing through it. Thus, it is easy to turn off and on any device containing an electromagnet.
Electromagnets can be switched on and off. This is good in a scrap yard because they need to pick heavy pieces of metal and then drop it.
The answer to this problem is in a Nadpt+
B).ozone
C).radon
D).carbon dioxide
b. environmental sociology
c. environmental law
d. environmental activism
How did detectives nab the suspect based on the pod evidence?
A) Detectives knew that Palo Verde trees grew in a limited area of the state.
B) Detectives used DNA markers to match the pods from the truck to pods on the scene.
C) Detectives constructed a pedigree chart of the trees in the area to determine genotypes.
D) Detectives did test crosses in the lab to determine the relationship of the pods and trees
Detectives used DNA markers to match the pods from the truck to pods on the scene to nab the suspect in an ongoing murder investigation. Hence, the correct option is B.
DNA markers are the variations that can be used to identify and track specific genes or regions of the genome. DNA markers are used in a variety of applications including medical, genetics, forensic science and agriculture.
There are several types of DNA markers such as SNP, AFLP, microsatellites, RFLP. In forensic science, they are used to identifying individuals by analyzing the DNA samples that are collected from the scene of crime.
In the case given here, by using DNA markers, the forensic experts helped the detectives to match the pods from the truck to the pods on the scene. Hence, the correct option is B.
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B) Detectives used DNA markers to match the pods from the truck to pods on the scene.