Good morning community! i need some with this question n. which of the following sexually transmitted diseases is directly linked to cervical and penile cancers?

a.
hiv

b.
hpv

c.
hsv-1

d.
hsv-2

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action

Who discovered a pattern to the elements in 1869?