Mr. Ramirez, whose blood type is AB-, has been injured and requires a blood transfusion. Which blood type may be acceptable for Mr. Ramirez to acquire?

What happens when a magniseum ion ia atracked to a chlrene ion

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

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating