Organisms under the taxonomic group animalia are.

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

In 2001, records showed that local stocks of fish were down worldwide. yet, records of harvests indicated that fish were being taken at records rates. what was actually happening?

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.