I am arranged as a double helix, and my shape is often described as a “twisted ladder” DNA ONLY
RNA ONLY
BOTH DNA AND RNA

What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

Any sound above what db can cause hearing loss in human beings