plz hep p8 points if u do the table below shows the half-life of an element:
half-life data
element half-life
carbon-14 5,730 years
scientists have found that the carbon-14 content of an unknown prehistoric sample was reduced to one-half. what best describes the identity of the sample?
an organism that died more than 10,000 years ago
a rock that formed more than 10,000 years ago
an organism that died 5,730 years ago
a rock that formed 5,730 years ago

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.

In what ways does a sanitary landfill differ from an open air landfill?

The table below describes geological events. event boundary where they occur convergent divergent transform a yes no no b yes yes no which statement is most likely correct? answers: 1). event a represents earthquakes and event b represents the formation of ocean basins. 2.) event a represents the formation of ocean basins and event b represents earthquakes. 3.) event a represents volcanic eruption and event b represents the creation of mountain ranges. 4.) event a represents the creation of mountain ranges and event b represents volcanic eruption.