All organisms are made of cells
all existing cells are produced by other living cells
the cell is the most basic unit of life
The disease is mainly caused by a lack of a slippery substance in the lungs called surfactant. This substance helps the lungs fill with air and keeps the air sacs from deflating. Surfactant is present when the lungs are fully developed.
https://medlineplus.gov/ency/article/001563.htm
Answer:
The object's velocity is increasing
Explanation:
From the graph above, we can deduce that the velocity is increasing. From the first stage, v=m/s=0.
At the third stage, v=20/2= 10m/s.
At the 5th stage, v=80/4=20m/s.
This shows velocity is increasing.
