Having trouble with some questions?

7: The study of unusual deaths and sicknesses with no apparent cause would include what specific area of forensic medicine?
cybrocrime investigation
toxicology
poisonology
autopsy
virology

8: Pathology and toxicology would both be involved in the investigation of
a suspected death from AIDS
a death where an overdose of drugs is suspected
a death due to severe burns
an unidentifiable disease
suffocation

9: Toxicological analysis with gas chromatography would be important in a case
relating to drugs
relating to poisons
unexplained death with no obvious wounds or disease
suspected food or drug contaminations
all of the above

10: The toxicology (studies effects of drugs or poisons on the body) investigations would be take place in which case?
the alteration of usual body temperatures after death due to drugs
effects of smoking on the body
automobile accident with a suspicion of drunken driving
athletes who have unusual muscle mass
all of the abov

Since there wasn't enough room I have to enter this here, I'm doing this as part of schoolwork to catch up with my work in my schoolwork, but I'm having a hard time figuring out the answers to this questions. Hoping someone can help =D

7: The study of unusual deaths and sicknesses with no apparent cause would include what specific area of forensic medicine?
cybrocrime investigation
******toxicology******
poisonology
autopsy
virology

8: Pathology and toxicology would both be involved in the investigation of
a suspected death from AIDS
*****a death where an overdose of drugs is suspected*****
a death due to severe burns
an unidentifiable disease

9: Toxicological analysis with gas chromatography would be important in a case
relating to drugs
relating to poisons
unexplained death with no obvious wounds or disease
suspected food or drug contaminations
****all of the above****

10: The toxicology (studies effects of drugs or poisons on the body) investigations would be take place in which case?
the alteration of usual body temperatures after death due to drugs
effects of smoking on the body
automobile accident with a suspicion of drunken driving
athletes who have unusual muscle mass
****all of the above****

Since there wasn't enough room I have to enter this here, I'm doing this as part of schoolwork to catch up with my work in my schoolwork, but I'm having a hard time figuring out the answers to this questions. Hoping someone can help =D

One other question that I can't really answer because I'm a little confused by the wording.
An expensive internet crime which sought attention more than money involved

credit card theft
plagiarism
*****viruses and worms*****
stealing private and secret files
all of the above

autopsy
overdose
all
all