What host is used to make the flu vaccine and why can this host be a problem for some people?

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:

What is the most important factor in determining climates.

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?