The student shall demonstrate their understanding of the reasons for and against sexual reproduction by classroom participation, lab reports and answers to the implication questions. Both sea urchins and humans are sexual beings.
Sexual reproduction mixes the genes up more than is possible with asexual reproduction.
This allows for greater diversity in a short period of time. This can lead to a greater likelihood of at least a few individuals being resistant to a new predator, parasite, or disease. They can't have kids. They eat too much and hog other resources too. And, many organisms do just fine without them.