B. nucleus which is the brain of a cell
Answer:
<em>phenotype</em> plz mark me brailiest
Explanation:
<span>Kepler’s harmonic law is the
third law of the Planetary Motion. He discovered this after ten years that
there is a relation between the time of a planet’s orbit and its distance from
the sun. The harmonic law states that <u>the squares of the orbital periods of
the planets around the Sun are proportional to the cubes of the planet’s orbital
period</u>. <u> </u> </span>
If the pH meter is used frequently, the pH meter accuracy should be checked before measuring an unknown pH. For this purpose, before measuring an unknown pH of a solution, a check must be carried out against a standard buffer solution with pH that is the nearest to the target solution.