Answer:
Alveoli
Explain:
They are the workhorses of your respiratory system. You have about 480 million alveoli, located at the end of bronchial tubes. When you breathe in, the alveoli expand to take in oxygen. When you breathe out, the alveoli shrink to expel carbon dioxide.
Answer:
The rocky, brittle lithosphere cracks. These cracks are called faults.
Explanation: The water cycle is when water changes state of matter starting at water than evaporation ( water rising in the air) to condensation ( the formation of a cloud) to precipitation (when it rains) and than repeat. hope this helped.
Answer:
a) Time = Distance/speed
Time = 30km/15km per hour
Time = 2 hour
b) Time = Distance/speed
Time = 30m/6m per sec
Time = 5 sec
Answer:
The correct answer is - the star is a medium-size star.
Explanation:
On the basis of the given information, we know that the color of the sun and the color of the observed or studied star by astronomer is similar and on the basis of this observation, he stated that the temperature and the size of the sun is also similar.
As we know the size of the sun is medium in comparison to other star and have less temperature to the other stars which means it is cooler than other star and has a medium size.
