What is the flow of genetic information in eukaryotic organisms? what processes link them?

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

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