What is the main function of the b lymphocyte?
a. maintain fluid balance
b. produce antibodies when triggered by antigens
c. produce t lymphocytes
d. transport fat through the lymphatic system

Which of the following is a cost of urbanization? a-cities can provide a high standard of living. b-cities are hubs of entertainment and education. c-paving over land changes the environment. d-job opportunities are greater in urban centers.

Liquid water turns into water vapor at which step in the water cycle

Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)