8. which of the following body systems does the immune system rely on to provide the first line of defense against pathogens?
a. integumentary system
b. nervous system
c. circulatory system
d. endocrine system

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

a.indigo and cochineal

b.animal hides

c.silver and gold

e.cacao beans and sugarcane

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.

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