A referee runs towards you while blowing a whistle, resulting in a sound with a greater pitch than when you heard the whistle at halftime and the referee was stationary. What is this an example of? *

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Which articulations allow for greatest range of motion?

If element x has 99 protons how many electrons does it have