I think the cytoskeletal protein that helps a cell maintain its shape is actin.
Answer:
mouth and or nose
Explanation:
air enters the respiratory system through the nose and mouth and passes down the throat and through a voice box.
Answer:
1) 945000 m
2) 6.11 miles/hour
3) 3.52 seconds
Explanation:
1. Speed is the time rate of change of distance, it is the ratio of distance to time. Speed is given by the equation:
![speed(S)=\frac{distance(d)}{time(t)}](https://tex.z-dn.net/?f=speed%28S%29%3D%5Cfrac%7Bdistance%28d%29%7D%7Btime%28t%29%7D)
Given that:
Time (t) = 9 hours and Speed (S) = 105 km/h
![S=\frac{d}{t}\\ d=S*t=105*9=945km=945000m](https://tex.z-dn.net/?f=S%3D%5Cfrac%7Bd%7D%7Bt%7D%5C%5C%20d%3DS%2At%3D105%2A9%3D945km%3D945000m)
2) Time (t) = 0.9 hours and distance (d) = 5.5 miles
![S=\frac{d}{t}\\ S=\frac{5.5}{0.9} =6.11miles/hour](https://tex.z-dn.net/?f=S%3D%5Cfrac%7Bd%7D%7Bt%7D%5C%5C%20S%3D%5Cfrac%7B5.5%7D%7B0.9%7D%20%3D6.11miles%2Fhour)
3) Acceleration it is the ratio of velocity to time. Acceleration is given by the equation:
![Accceleration(a)=\frac{Final,velocity(u)-initial, velocity(v)}{time(t)}](https://tex.z-dn.net/?f=Accceleration%28a%29%3D%5Cfrac%7BFinal%2Cvelocity%28u%29-initial%2C%20velocity%28v%29%7D%7Btime%28t%29%7D)
Given that :
a = 4.2 m/s² , u = 18.9 m/s and v = 33.7 m/s
![a=\frac{v-u}{t}\\ t=\frac{v-u}{a}\\ t=\frac{33.7-18.9}{4.2}=3.52s](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Bv-u%7D%7Bt%7D%5C%5C%20t%3D%5Cfrac%7Bv-u%7D%7Ba%7D%5C%5C%20t%3D%5Cfrac%7B33.7-18.9%7D%7B4.2%7D%3D3.52s)
Carbon is released back into the air when a living thing exhales carbon. For example, humans breathe in oxygen and exhale carbon.