Collette has a prediction that college students ' immune systems have declined due to the use of hand sanitizers . This idea is a(n) :

Are aliens real? justify you’re answer.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

Which type of microscope would allow the viewer to see ribosomes inside a cell?