4. Explain the purpose of a trial and the roles of those in the courtroom (including the judge, prosecutor, defense attorney, and scientists).

The roles are -

Explanation:

Scientists are basically forensic scientists. Therefore scientists are brought to present any forensic evidence like DNA, autopsy, etc regarding the case that helps solidify the case!

The rest was written by someone else

The purpose of a trial is when all people cannot make the decision of disagreements between each other and cannot be formal about it and is taken to court for trial possibly, for the case to be heard by everyone. The judge role is to decide the decision of the case. The prosecutor's role is the person the person taking someone to court. The defense attorney role to defend the person facing the charges.

I do not understand why scientists would be related to law, though. Maybe for certain cases involving DNA? Idk, good luck! Hope I helped.

Introducing a non-native animal into an area that has never been exposed to that animal can cause:

An imbalance in ecosystem dynamics.

Explanation:

In order for you to understand the ecosystem imbalance that could be caused with an introduced alien species, I will give you two examples:

If you introduce a predator into an ecosystem, said predator will consume all possible animals in its path since it has no competition for said food, which can lead to the extinction of said animal that serves as its prey, as well as the displacement of others. animals that can serve as food or that have benefited from the extinct species. If an herbivore is introduced, it will surely compete for the plants against the endemic species, which can cause the decrease of said food and the displacement or death of the native species.