Mutations (changes) to the DNA within the cells.
What are "these" cells you are referring to?
Answer: pretty sure they create islands.
Explanation: since they start underwater, they cool off and make islands? That’s what I remember.
A. 12.5 m/s.
The average speed is defined as the relationship between the displacement made by a body and the total time it took to perform it.
The formula that will allow you to calculate the average speed is:
v = d/t, where d is the traveled distance and t the time it took to travel the distance.
We hace to convert 4 minutes to second:
(60 s/1 min)*(4 min) = 240 s
So, the average speed is:
v = 3000 m/240 s
v = 12.5 m/s
To keep the infant's head fairly even with its body, which prevents gravity from moving the liquid to an unneeded place.