Epstein shares a demonstration comparing 1936 sprinter Jesse Owens with present-day sprinter, Usain Bolt. What role does biomechanics play in this, and how does it relate to what we learned in the unit? Epstein says that technology has made a difference in all sports over the years. How has it done this? What are some examples of these technologies? Explain what Epstein meant when he said that the gene pool in competitive sports has changed and is pushing athletes forward? Discuss how an athlete’s mindset impacts their performance in professional sports. Please provide examples and discuss what traits humans have that allow us to participate in ultra-endurance sports. Out of the three factors Epstein gives for improved performance among professional athletes, which do you think has had the most overall impact on sports? Please briefly explain why.

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

Where does all the water go? according to the environmental protection agency (epa), in a typical wetland environment, 39% of the water is outflow; 46% is seepage; 7% evaporates; and 8% remains as water volume in the ecosystem (reference: united states environmental protection agency case studies report 832-r-93-005). chloride compounds as residuals from residential areas are a problem for wetlands. suppose that in a particular wetland environment the following concentrations (mg/l) of chloride compounds were found: outflow, 60.4; seepage, 73.7; remaining due to evaporation, 26.4; in the water volume, 46.8. (a) compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. (round your answer to one decimal place.) mg/l (b) suppose the epa has established an average chlorine compound concentration target of no more than 58 mg/l. does this wetlands system meet the target standard for chlorine compound concentration? yes. the average chlorine compound concentration (mg/l) is too high. yes. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is too high.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?