<span>C. Mao Zedong
Hope this helps!~</span>
The speed of sound at T=25°C is Vs=346 m/s. So the sound has to reach the cliff and return back to you so the path it needs to travel is s=2*440 m = 880 m.
Since the speed of sound is constant s=Vs*t, and t= s/Vs=880/346=2.54335 s. You will hear the echo after t=2.54335 s after you shouted.
Answer:
i would think the first two, but i cant be sure.
Explanation:
Hey there,
Question : Which microbes can be Eukaryotic?
Answer : A, Bacteria
Hope this helps :D
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