I can’t not solve this please helppp!!

Which blood cell spend most of their time in the lymphatic system?

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

Analyze how the water cycle affects a food web. now list 3 examples for each below using complete sentences, on how too much water would affect the same web? how about to little water?