Clonal selection of lymphocytes leads to the development of which type of cells?
a. effector cells and b cells
b. t cells and memory cells
c. effector cells and memory cells

Monitor and apply fix up strategies

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer