The spaces within a lymph node are called through which lymph circulates

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

In the water cycle , when does water undergo a chemical change

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