What is one of the goals of the headstart program 1.improving middle school aged children’s test scores 2.preparing preschool aged children for school 3.preventing teen drug and alcohol abuse 4. all of the above

Which of these is the best ways to avoid problems with gangs? select all correct answer. a. dress like a gang member but dont join a gang b. inform your parents or police if gang members try to recruit you c. go to places gang member frequent d. become friends with someone who is a gang memeber

Me with this i need to get the answer quickly.

You isolate an infectious substance capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, viroid, or prion. you have four methods at your disposal to analyze the substance and determine the nature of the infectious agent.i. treat the substance with enzymes that destroy all nucleic acids and then determine whether the substance is still infectious.ii. microscope.iii. culture the substance on nutritive medium, away from any plant cells.iv. treat the sample with proteases that digest all proteins and then determining whether the substance is still infectious.if you already know that the infectious agent was either bacterial or viral, which method(s) listed above would allow you to distinguish between these two possibilities? a) ib) iic) ii or iiid) iv