I’m not an expert but I’d say B
Answer:
go for the second answer idk may be right i think
Explanation:
<span>If Noam chooses a filter, it might be more effective than a screen. After using it for a while, though, he will have to replace it, which could be expensive. A screen might be less effective, but it can be cleaned instead of replaced.</span>
Nitrogen gas is most commonly found in which earths sphere?a. Biosphere
b. Exosphere
c. Atmosphere
d. Hydrosphere