What would a doctor give to a patient to relieve the symptoms of flu?

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

What feature of cell theory is best demonstrated in the image

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