Answer:the resistance that one surface or object encounters when moving over another.
Explanation:it is easy!
The Gecko. While human-made devices inspired by gecko feet have emerged in recent years, enabling their wearers to slowly scale a glass wall, the possible applications of gecko-adhesion technology go far beyond Spiderman-esque antics. A researcher is looking into how the technology could be applied in a high-precision industrial setting, such as in robot arms used in manufacturing computer chips.
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Are the answers
Hi.
After a quick search, I'm pretty positive you're supposed to use the wafting technique.<em>
</em><em />Hope this helps.<em>
</em>
Mechanical waves cannot move without a medium
