Bacteria! Bacteria! Bacteria! :)
Answer:
The answer is single replacement :)
Answer:
It is the distance that light travels in a year.
Explanation:
ASTRONOMY
a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles).
A gated channel allows the specific type of molecule or ion individually. Hope this helped!