So planarians' regenerative ability are powerful cells called pluripotent stem cells, which make up one-fifth of their bodies and can grow into every new body part. I hope this helped if you need more info about this let me know
Answer:
It is the 2nd one
Explanation:
For example when you grow your cells multiply or divide into more cells. So that's just in general, but it works for this two.
Galaxy, solar system, star, planet, moon
Answer:
A substance that is more dense per volume has more mass per volume. ...
Explanation:
Thus, sound will travel at a slower rate in the more dense object if they have the same elastic properties.
Answer:
they us concentrated scopes that go directly out of the atmosphere without any interruption