The nurse is preparing to administer digoxin to a client with heart failure. the nurse obtains an apical pulse rate for 1 minute and determines a rate of 52 beats/minute. what is the first action by the nurse?

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area