Why are runners in the 100 meter dash and marathon runners forced to employ different running strategies in order to win their respective races?

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Approximately what wavelength of light is best absorbed by chlorophyll a