In contrast with nonhuman animals, the reasons why humans engage in sexual behavior are

Reasons why humans engage in sexual behavior are based on more complex psychological and biological processes. Sexual behavior is the way human show their sexuality which involves sexual arousal to partner. Human sexual behavior can be also classified as heterosexual behavior and homosexual behavior.  

answer; first blank(1); 30% two(2); salmonella; i believe this is correct; //good luck;