Dr. delmar wants to determine how loud initially a certain noise must be in order for it to be heard from a distance of 60 feet. her question involves the concept of:

Calvin is a 12-year-old boy. due to pressure from his friends, he has started consuming certain toxic materials that are addictive and harmful. calvin is a victim of what type of abuse? a. sexual b. substance c. physical d. emotional

Why is it often difficult to get funding for local parks? a. state governments do not like to grant permits for local parks. b. federal regulations prohibit most fund raising. c. there is often a small tax base. d. federal funding cuts have all but stopped local construction of parks.

Which of the following statements describes the lysogenic cycle of lambda (λ) phage? a) after infection, the viral genes immediately turn the host cell into a lambda-producing factory, and the host cell then lyses.b) most of the prophage genes are activated by the product of a particular prophage gene.c) the phage genome replicates along with the host genome.d) the phage dna is copied and exits the cell as a phage.