FORENSICS Calculate the medulary index of a hair whose diameter is 115 microns wide and whose medulla measures 60 microns Is this a human or animal hair?

Astudent visits the beach during a very hot day she steps on the santa and jumps because it is so hot what type of heat transfer is demonstrated by the sand in this example

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

What is the difference between an igneous, sedimentary and metamorphic rock