Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


RBCs have an average lifespan of 120 days
WBCs live for  few days (5-21 days)
1 5 1
RBCs have a life span of 120 days.
WBC have a life span varying from 4 days to a few weeks.

(PS. There are 5 different type of WBCs with different life spans.)
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts