Which produces the sediment that ultimately lead to soil formation?

a. rivers

b. rainfall

c. weathering

d. plants

Chicken pox and hepatitis are bacterial diseases. true or false?

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine