Pacemakers are devices that keep heart muscles contracting at a steady rate. if a person needs a pacemaker, what does that suggest about his or her heart cells ability to send and receive messages

What are 3 reasons that natural selection occurs

The pie chart tracks the percentage of renewable energy that's being used in a particular community near the ocean. what are two advantages of using this type of graph for this particular data set?

How did the club fungi get its name? a. it is named for the club-shaped seeds it produces. b. it is named for the way individual species grow together in small groups called “clubs.” c. it is named for the club-shaped area where it produces spores. d. it is named for the club-like mechanism it uses to kill its prey.