Telescopes, satelites, rovers, just to name a few. Hope this helps!
Explanation:
vacuoles help maintain water balance.
The baby is used to getting what it needs through the placenta, which includes oxygen. The baby's lungs are initially filled with amniotic fluid.
Because comets are darker colored so they need light to shine on them to be seen in the dark skies of space.
It's a biologist (a person that studies living organisms and systems)
