The answer is C)
Backflow prévention device
Many different ways try helping them by gaveling yourself advice by giving them the same advice
The better health they are in is the correct answer
The most common source of infectious diseases in water supplies is:
a. algal blooms
b. sewage
c. surface runoff
d. none of the above (correct answer) (<span>The most common source of infectious diseases in water supplies is water contaminated with fecal remains of humans or animals and pathogenic microorganisms)
Which of the following is a nonrenewable resource?
a. geothermal
b. solar
c. nuclear
<span>
d. biomass
</span></span>
<span>A nonrenewable resource is a natural resource that we use and that can not be produced, so they are going to finish in some point. </span>
Atypical moles that can develops into skin cancer are known as dysplasia nevi
