imagine that a new surgical procedure has been developed to treat spinal cord injury. what are some possible risks and benefits of having this procedure?

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

How can an organ, such as the lungs, work for multiple body systems?

Which type of stimulus do mechanoreceptors detect? sound pain heat light